APA

Eiseley L. C., . (19620). The firmament of time. New York: Atheneum.

Chicago

Eiseley Loren C, . 19620. The firmament of time. New York: Atheneum.

Harvard

Eiseley L. C., . (19620). The firmament of time. New York: Atheneum.

MLA

Eiseley Loren C, . The firmament of time. New York: Atheneum. 19620.