Παραπομπή σε μορφή APA (7η εκδ.)

Krejci, J., & Krejcova, A. (1990). Before the European challenge: The great civilizations of Asia and the Middle East. State University of New York Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Krejci, Jaroslav, και Anna Krejcova. Before the European Challenge: The Great Civilizations of Asia and the Middle East. Albany: State University of New York Press, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Krejci, Jaroslav, και Anna Krejcova. Before the European Challenge: The Great Civilizations of Asia and the Middle East. State University of New York Press, 1990.