APA-referens (7:e uppl.)

Leavitt, D. (1987). The lost language of cranes. Penguin.

Chicago-referens (17:e uppl.)

Leavitt, David. The Lost Language of Cranes. Harmondsworth: Penguin, 1987.

MLA-referens (8:e uppl.)

Leavitt, David. The Lost Language of Cranes. Penguin, 1987.