Cita APA (7th ed.)

DURRENBERGER, R. (1969). California: The last frontier. Van Nostrand Reinhold co.

Cita Chicago (17th ed.)

DURRENBERGER, Robert. California: The Last Frontier. New York: Van Nostrand Reinhold co, 1969.

Cita MLA (9th ed.)

DURRENBERGER, Robert. California: The Last Frontier. Van Nostrand Reinhold co, 1969.