APA (7th ed.) Zitazioa

Estes, S. (1986). Called to die: The story of American linguist chet bitterman, slain by terrorists. Grand Rapids.

Chicago Style (17th ed.) Zitazioa

Estes, Steve. Called to Die: The Story of American Linguist Chet Bitterman, Slain by Terrorists. Michigan: Grand Rapids, 1986.

MLA (9th ed.) Zitazioa

Estes, Steve. Called to Die: The Story of American Linguist Chet Bitterman, Slain by Terrorists. Grand Rapids, 1986.