Gaya APA
Olson, T.
(1950).
Elements Of Dairying
(
Ed. 30 th)
.
New York:
The Macmillan Company.
Gaya MLA
Olson, T.M..
"Elements Of Dairying".
Ed. 30 th
New York:
The Macmillan Company,
1950.
Text.