Παραπομπή σε μορφή APA (7η εκδ.)

Frankel, E. G. (2006). Challenging American Leadership: Impact of National Quality on Risk of Losing Leadership. Springer Netherlands.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Frankel, Ernst Gabriel. Challenging American Leadership: Impact of National Quality on Risk of Losing Leadership. Dordrecht: Springer Netherlands, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Frankel, Ernst Gabriel. Challenging American Leadership: Impact of National Quality on Risk of Losing Leadership. Springer Netherlands, 2006.