Παραπομπή APA

McReynolds, D. (1970). We Have been Invaded by The 21st Century. Praeger.

Παραπομπή Chicago Style

McReynolds, David. We Have Been Invaded by The 21st Century. New York: Praeger, 1970.

Παραπομπή MLA

McReynolds, David. We Have Been Invaded by The 21st Century. Praeger, 1970.