APA
Harbin E. O., . (1940). The fun encylopedia. Nashville: Cokesbury Press.
Chicago
Harbin E O, . 1940. The fun encylopedia. Nashville: Cokesbury Press.
Harvard
Harbin E. O., . (1940). The fun encylopedia. Nashville: Cokesbury Press.
MLA
Harbin E O, . The fun encylopedia. Nashville: Cokesbury Press. 1940.