Παραπομπή σε μορφή APA (7η εκδ.)

Higgins, G. M. (1982). Potential population supporting capacities of lands in the developing world: By G.M. Higgins ... [et al.]. Food and Agriculture Organization of the United Nations.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Higgins, G. M. Potential Population Supporting Capacities of Lands in the Developing World: By G.M. Higgins ... [et Al.]. Rome: Food and Agriculture Organization of the United Nations, 1982.

Παραπομπή σε μορφή MLA (9th εκδ.)

Higgins, G. M. Potential Population Supporting Capacities of Lands in the Developing World: By G.M. Higgins ... [et Al.]. Food and Agriculture Organization of the United Nations, 1982.