Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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