Cita APA (7a ed.)

Ganthony, R., & West, M. P. (1960). A message from Mars (7th imp.). Longmans.

Cita Chicago Style (17a ed.)

Ganthony, Richard, y Michael Philip West. A Message from Mars. 7th imp. London [etc.]: Longmans, 1960.

Cita MLA (9a ed.)

Ganthony, Richard, y Michael Philip West. A Message from Mars. 7th imp. Longmans, 1960.