APA (7th ed.) Citation

Downing, D. C. (1992). Planets in peril: A critical study of C.S. Lewis's Ransom trilogy. University of Massachusetts Press.

Chicago Style (17th ed.) Citation

Downing, David C. Planets in Peril: A Critical Study of C.S. Lewis's Ransom Trilogy. Amherst: University of Massachusetts Press, 1992.

MLA (9th ed.) Citation

Downing, David C. Planets in Peril: A Critical Study of C.S. Lewis's Ransom Trilogy. University of Massachusetts Press, 1992.