Cita APA (7a ed.)

Robottom, J., & Williams, B. (1971). Food and people (1. publ., 2. impression.). Longman.

Cita Chicago Style (17a ed.)

Robottom, John, y Barry Williams. Food and People. 1. publ., 2. impression. London: Longman, 1971.

Cita MLA (9a ed.)

Robottom, John, y Barry Williams. Food and People. 1. publ., 2. impression. Longman, 1971.