APA

Herron Edward A, . (1968). Cobra in the sky. New York: Crowell-Collier Press.

Chicago

Herron Edward A, . 1968. Cobra in the sky. New York: Crowell-Collier Press.

Harvard

Herron Edward A, . (1968). Cobra in the sky. New York: Crowell-Collier Press.

MLA

Herron Edward A, . Cobra in the sky. New York: Crowell-Collier Press. 1968.