Παραπομπή APA

David Halvarson, Donna Hill, Pedro Villagas et al, & Simon Shane M. (2006). Biosecurity in the poultry industry. International boob distributing Co.

Παραπομπή Chicago Style

David Halvarson, Donna Hill, Pedro Villagas et al, και Simon Shane M. Biosecurity in the Poultry Industry. International boob distributing Co, 2006.

Παραπομπή MLA

David Halvarson, et al. Biosecurity in the Poultry Industry. International boob distributing Co, 2006.