Παραπομπή σε μορφή APA (7η εκδ.)

Weigel, U., & Ruecker, M. (2017). The Strategic Procurement Practice Guide: Know-how, Tools and Techniques for Global Buyers. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Weigel, Ulrich, και Marco Ruecker. The Strategic Procurement Practice Guide: Know-how, Tools and Techniques for Global Buyers. Cham: Springer International Publishing : Imprint: Springer, 2017.

Παραπομπή σε μορφή MLA (8th εκδ.)

Weigel, Ulrich, και Marco Ruecker. The Strategic Procurement Practice Guide: Know-how, Tools and Techniques for Global Buyers. Springer International Publishing : Imprint: Springer, 2017.