APA (7th ed.) Citation

Ferris, C. D., & Miller, L. D. (1989). Supplement to A catalogue/checklist of the butterflies of America, north of Mexico. Lepidopterists' Society.

Chicago Style (17th ed.) Citation

Ferris, Clifford D., and Lee D. Miller. Supplement to A Catalogue/checklist of the Butterflies of America, North of Mexico. [Los Angeles?]: Lepidopterists' Society, 1989.

MLA (9th ed.) Citation

Ferris, Clifford D., and Lee D. Miller. Supplement to A Catalogue/checklist of the Butterflies of America, North of Mexico. Lepidopterists' Society, 1989.