Gaya APA
L., B, , D. et al (1972).
Dairy Cattle: Principle Practices Poblem Pofits (2ed. Ed.).
Philadelphia:
Lea dan Febiger.
Gaya MLA
L., Bath, , Donald. et al.
"Dairy Cattle: Principle Practices Poblem Pofits".
2ed. Ed.
Philadelphia:
Lea dan Febiger,
1972.
Text.