Παραπομπή APA

A E Wild & F S Billett. (1975). Practical studies of animal development. Chapman and hall.

Παραπομπή Chicago Style

A E Wild και F S Billett. Practical Studies of Animal Development. Chapman and hall, 1975.

Παραπομπή MLA

A E Wild και F S Billett. Practical Studies of Animal Development. Chapman and hall, 1975.