Cita APA (7a ed.)

Stevenson, E. L. (1911). Portolan charts. The hispanic Soc. of Amer..

Cita Chicago Style (17a ed.)

Stevenson, Edward Luther. Portolan Charts. New York: The hispanic Soc. of Amer., 1911.

Cita MLA (9a ed.)

Stevenson, Edward Luther. Portolan Charts. The hispanic Soc. of Amer., 1911.