APA (7th ed.) Citation

Alper, A. F. (1996). A brief green history of Planet Earth. PPI Publishing.

Chicago Style (17th ed.) Citation

Alper, Ann Fitzpatrick. A Brief Green History of Planet Earth. Kettering, OH: PPI Publishing, 1996.

MLA (9th ed.) Citation

Alper, Ann Fitzpatrick. A Brief Green History of Planet Earth. PPI Publishing, 1996.