Helga, Greene, C., & Olkowski, W. (1975). The city peoples book of raising food. Rodale Press.
Citazione stile Chigago Style (17a edizione)Helga, Cathy Greene, e William Olkowski. The City Peoples Book of Raising Food. Pennsylvania: Rodale Press, 1975.
Citatione MLA (9a ed.)Helga, et al. The City Peoples Book of Raising Food. Rodale Press, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.