Cita APA (7th ed.)

Helga, Greene, C., & Olkowski, W. (1975). The city peoples book of raising food. Rodale Press.

Cita Chicago (17th ed.)

Helga, Cathy Greene, i William Olkowski. The City Peoples Book of Raising Food. Pennsylvania: Rodale Press, 1975.

Cita MLA (9th ed.)

Helga, et al. The City Peoples Book of Raising Food. Rodale Press, 1975.