APA (7th ed.) Citation

Butterworth, W. E., & Frame, P. (1978). Next stop, Earth. Walker.

Chicago Style (17th ed.) Citation

Butterworth, W. E., and Paul Frame. Next Stop, Earth. New York: Walker, 1978.

MLA (9th ed.) Citation

Butterworth, W. E., and Paul Frame. Next Stop, Earth. Walker, 1978.