Παραπομπή σε μορφή APA (7η εκδ.)

Clarke, R. F. (1958). An ecological study of reptiles and amphibians in Osage County, Kansas. Graduate Division of the Kansas State Teachers College.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Clarke, Robert F. An Ecological Study of Reptiles and Amphibians in Osage County, Kansas. Emporia: Graduate Division of the Kansas State Teachers College, 1958.

Παραπομπή σε μορφή MLA (8th εκδ.)

Clarke, Robert F. An Ecological Study of Reptiles and Amphibians in Osage County, Kansas. Graduate Division of the Kansas State Teachers College, 1958.