APA

Heinlein R., . (1950). Farmer in the sky. New York: Charles Scribner's sons.

Chicago

Heinlein Robert, . 1950. Farmer in the sky. New York: Charles Scribner's sons.

Harvard

Heinlein R., . (1950). Farmer in the sky. New York: Charles Scribner's sons.

MLA

Heinlein Robert, . Farmer in the sky. New York: Charles Scribner's sons. 1950.