Cita APA (7a ed.)

Muir, J. (1901). Our national parks. Houghton, Mifflin and company.

Cita Chicago Style (17a ed.)

Muir, John. Our National Parks. Boston, New York: Houghton, Mifflin and company, 1901.

Cita MLA (8a ed.)

Muir, John. Our National Parks. Houghton, Mifflin and company, 1901.

Precaución: Estas citas no son 100% exactas.