APA način citiranja (7. izdanje)

Sagan, D. Evolution: Dorion Sagan. Keywords for environmental studies.([2016]).

Čikaški stil citiranja (17. izdanje)

Sagan, Dorion. "Evolution: Dorion Sagan." Keywords for Environmental Studies.([2016]) .

MLA način citiranja (8. izdanje)

Sagan, Dorion. "Evolution: Dorion Sagan." Keywords for Environmental Studies.([2016]), .