APA (7th ed.) Citation

Horgan, P. (1963). Conquistadors in North American history. Farrar, Straus.

Chicago Style (17th ed.) Citation

Horgan, Paul. Conquistadors in North American History. New York: Farrar, Straus, 1963.

MLA (9th ed.) Citation

Horgan, Paul. Conquistadors in North American History. Farrar, Straus, 1963.