Cita APA (7th ed.)

Keeler, C. E. (1961). Apples of immortality from the Cuna tree of life: The study of a most ancient ceremonial and a belief that survived 10,000 years. Exposition Press.

Cita Chicago (17th ed.)

Keeler, Clyde Edgar. Apples of Immortality from the Cuna Tree of Life: The Study of a Most Ancient Ceremonial and a Belief That Survived 10,000 Years. N.Y.: Exposition Press, 1961.

Cita MLA (8th ed.)

Keeler, Clyde Edgar. Apples of Immortality from the Cuna Tree of Life: The Study of a Most Ancient Ceremonial and a Belief That Survived 10,000 Years. Exposition Press, 1961.