Gaya APA
al., E. et al
(1980).
Parasitology For Veterinarians
(
Ed. 3)
.
Philadelphia:
W.B Saunders Company.
Gaya MLA
al., Et. et al.
"Parasitology For Veterinarians".
Ed. 3
Philadelphia:
W.B Saunders Company,
1980.
Text.