Gaya APA

Wilke, W, L. et al (2009). Anatomy and physiology of farm animals [PART I] (7th ed.). Lowa: Wiley-Blackwell.

Gaya MLA

Wilke, W., Lee. et al. "Anatomy and physiology of farm animals [PART I]". 7th ed. Lowa: Wiley-Blackwell, 2009. e-book.