Gaya APA
L., K, , J., W.E., C, .
(1962).
Swine Production
(
3th. Ed.)
.
New York:
McGrawHill Book company INC..
Gaya MLA
L., Krider, , J.., W.E., Carroll, .
"Swine Production".
3th. Ed.
New York:
McGrawHill Book company INC.,
1962.
Text.