Παραπομπή σε μορφή APA (7η εκδ.)

Brown, L. R. (1978). The twenty-ninth day: Accommodating human needs and numbers to the earth's resources. Norton.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Brown, Lester Russell. The Twenty-ninth Day: Accommodating Human Needs and Numbers to the Earth's Resources. New York: Norton, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Brown, Lester Russell. The Twenty-ninth Day: Accommodating Human Needs and Numbers to the Earth's Resources. Norton, 1978.