1976

• Gordon, R.D. 1976: The Scymnini (Coleoptera: Coccinellidae) of the United States and Canada: key to genera and revision of Scymnus, Nephus and Diomus. Bulletin of the Buffalo Society of Natural Sciences, (28) [Not seen] Reference page. 

1984

• Pang, X. & Gordon, R.D., 1984. Lectotype designations and new synonymy in Oriental Scymnini (Col., Cocc.). The Coleopterists Bulletin, 38: 131–135.

1985

• Gordon, R.D. 1985: The Coccinellidae (Coleoptera) of America north of Mexico. Journal of the New York Entomological Society 93(1) JSTOR Reference page. 

1986

• Pang, X. & Gordon, R.D., 1986. The Scymnini (Coleoptera: Coccinellidae) of China. The Coleopterists Bulletin, 40: 157–199.

2007

• Gordon R.D. & Skelley P.E. 2007. A monograph of the Aphodiini inhabiting the United States and Canada. Memoirs of the American Entomological Institute 79: 1–580. ISBN-13: 9781887988230 Reference page. 

• Dellacasa, M., Dellacasa, G. & Gordon, R.D. 2007. Ferrerianus, new genus for Aphodius biimpressus Schmidt, 1909 (Scarabaeoidea: Aphodiidae). Insecta mundi 0011: 1–4. Reference page. 

2011

• Dellacasa, M., Dellacasa, G. & Gordon, R.D. 2011. Cephalocyclus pseudofuliginosus new species from Mexico (Oaxaca) (Coleoptera: Scarabaeidae: Aphodiinae). Acta Zoologica Cracoviensia 54B(1-2): 31–36. DOI: 10.3409/azc.54b_1-2.31-36 Reference page. 

2012

• Dellacasa, M., Dellacasa, G. & Gordon, R.D. 2012. Systematic revision of Gonaphodiellus taxa, with description of two new genera and fourteen new species (Coleoptera: Scarabaeidae: Aphodiinae). Insecta mundi 0230: 1–41. Reference page. 

2014

• Gordon, R.D., Canepari, C. & Hanley, G.A. 2014. South American Coccinellidae (Coleoptera), Part XVI: systematic revision of Brachiacantha Dejean (Coccinellinae: Hyperaspidini). Insecta mundi (0390): 1–76. Full issue (PDF) Reference page. 

2016

• Dellacasa, M., Dellacasa, G. & Gordon, R.D. 2016. Euotophorus imeldae new genus and new species of Mexican Aphodiini (Coleoptera: Scarabaeidae: Aphodiinae). Insecta mundi 0507: 1–3. Abstract & full text Reference page. 

2017

• Churata-Salcedo, J.M., Almeida, L.M., González, G. & Gordon, R.D. 2017. On the taxonomy of the genus Sidonis Mulsant, stat. nov. (Coleoptera: Coccinellidae: Chnoodini) with descriptions of new species from Brazil. Zootaxa 4350(3): 500–510. DOI: 10.11646/zootaxa.4350.3.4 . Reference page.