Gaya APA
World Farming. Ada : 13(1971) nr. 11-12. 14(1972)-17(1975) 18(1976) nr. 1-9, 11-12. 19(1977). ().
Kansas:
Overland Park.
Gaya MLA
World Farming. Ada : 13(1971) nr. 11-12. 14(1972)-17(1975) 18(1976) nr. 1-9, 11-12. 19(1977).
.
Kansas:
Overland Park,
.
Majalah.