Cita APA (7th ed.)

Little, M. (1976). Ecology, Energetics and Human variability. W.M.C Brown Company.

Cita Chicago (17th ed.)

Little, Michael. Ecology, Energetics and Human Variability. NULL: W.M.C Brown Company, 1976.

Cita MLA (9th ed.)

Little, Michael. Ecology, Energetics and Human Variability. W.M.C Brown Company, 1976.