APA citiranje

Hoyle, F., & Hoyle, G. (1982). Frozen planet of Azuron. Laybird Books.

Chicago Edition Citation

Hoyle, Fred, and Geoffrey Hoyle. Frozen Planet of Azuron. Loughborough: Laybird Books, 1982.

MLA citiranje

Hoyle, Fred, and Geoffrey Hoyle. Frozen Planet of Azuron. Laybird Books, 1982.