Cita APA (7a ed.)

Eiseley, L. C. (1960). The firmament of time ([1st ed.].). Atheneum.

Cita Chicago Style (17a ed.)

Eiseley, Loren C. The Firmament of Time. [1st ed.]. New York: Atheneum, 1960.

Cita MLA (8a ed.)

Eiseley, Loren C. The Firmament of Time. [1st ed.]. Atheneum, 1960.