OCEB 2 Certification Guide, 2nd Edition

MLA

Weilkiens, Tim, et al. Oceb 2 Certification Guide, 2nd Edition. Morgan Kaufmann, 2017.

APA

Weilkiens, T., Duggen, K. Nena, Grass, A. R, Weiss, C., Grass, A., & Nena Duggen, K. (2017). OCEB 2 Certification Guide, 2nd Edition. Morgan Kaufmann.

Chicago

Weilkiens, Tim, Kim Nena Duggen, Andrea R Grass, Christian Weiss, Andrea Grass, and Kim Nena Duggen. OCEB 2 Certification Guide, 2nd Edition. : Morgan Kaufmann, 2017.