Cita APA

o Wilford Olsen. (1967). Animal parasites: Their biology and life cycles (2.). Burgess publihing company.

Chicago Edition Citation

o Wilford Olsen. Animal Parasites: Their Biology and Life Cycles. 2. Burgess publihing company, 1967.

Cita MLA

o Wilford Olsen. Animal Parasites: Their Biology and Life Cycles. 2. Burgess publihing company, 1967.

Atenció: Aquestes cites poden no estar 100% correctes.