APA (7th ed.) Citation
Larsen, E. (1969). A history of invention (4a.ed.). Roy Publishers.
Chicago Style (17th ed.) Citation
Larsen, Egon. A History of Invention. 4a.ed. New York: Roy Publishers, 1969.
MLA (9th ed.) Citation
Larsen, Egon. A History of Invention. 4a.ed. Roy Publishers, 1969.
Warning: These citations may not always be 100% accurate.