APA (7th ed.) Citation

Simmons, R. S., & Andersen, W. A. (1980). Notes on Maryland Lepidoptera No. 9: Seven new butterfly records for the state of Maryland. Zenodo.

Chicago Style (17th ed.) Citation

Simmons, R S., and William A. Andersen. Notes on Maryland Lepidoptera No. 9: Seven New Butterfly Records for the State of Maryland. Zenodo, 1980.

MLA (9th ed.) Citation

Simmons, R S., and William A. Andersen. Notes on Maryland Lepidoptera No. 9: Seven New Butterfly Records for the State of Maryland. Zenodo, 1980.