APA (7th ed.) Citation
Gurney Gene. (1970). Fact Book: Of the countries of the world. Crown Publ. Inc..
Chicago Style (17th ed.) Citation
Gurney Gene. Fact Book: Of the Countries of the World. New York: Crown Publ. Inc., 1970.
MLA (9th ed.) Citation
Gurney Gene. Fact Book: Of the Countries of the World. Crown Publ. Inc., 1970.
Warning: These citations may not always be 100% accurate.