Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Ashraf, M., Öztürk, M., Ahmad, M. S. A., & Aksoy, A. (2012). Crop Production for Agricultural Improvement. Springer Netherlands : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Muhammad Ashraf, Münir Öztürk, Muhammad Sajid Aqeel Ahmad, και Ahmet Aksoy. Crop Production for Agricultural Improvement. Dordrecht: Springer Netherlands : Imprint: Springer, 2012.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Crop Production for Agricultural Improvement. Springer Netherlands : Imprint: Springer, 2012.