Cita APA (7th ed.)

Milne, L. J., & Milne, M. (1971). The arena of life: The dynamics of ecology. Doubleday-Natural Press.

Cita Chicago (17th ed.)

Milne, Lorus Johnson, i Margery Milne. The Arena of Life: The Dynamics of Ecology. Nueva York: Doubleday-Natural Press, 1971.

Cita MLA (9th ed.)

Milne, Lorus Johnson, i Margery Milne. The Arena of Life: The Dynamics of Ecology. Doubleday-Natural Press, 1971.