APA

Parks E. T., Rippy J. F., . (1940). The Galapagos Islands, A Neglected Phase of American Strategy Diplomacy. [S.d.]: University of California Press.

Chicago

Parks E Taylor, Rippy J Fred, . 1940. The Galapagos Islands, A Neglected Phase of American Strategy Diplomacy. [S.d.]: University of California Press.

Harvard

Parks E. T., Rippy J. F., . (1940). The Galapagos Islands, A Neglected Phase of American Strategy Diplomacy. [S.d.]: University of California Press.

MLA

Parks E Taylor, Rippy J Fred, . The Galapagos Islands, A Neglected Phase of American Strategy Diplomacy. [S.d.]: University of California Press. 1940.