APA aipamena

Havighurst, W. (1952). Climb a lofty ladder. New York: Pyramid Books.

Chicago Style aipamena

Havighurst, Walter. Climb a Lofty Ladder. New York: Pyramid Books, 1952.

MLA aipamena

Havighurst, Walter. Climb a Lofty Ladder. New York: Pyramid Books, 1952.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.