APA (7th ed.) Citation

Notkin, J. J., Gulkin, S., & Zaffo, G. J. (1960). The how and why wonder book of machines. Wonder Books.

Chicago Style (17th ed.) Citation

Notkin, Jerome J., Sidney Gulkin, and George J. Zaffo. The How and Why Wonder Book of Machines. New York: Wonder Books, 1960.

MLA (9th ed.) Citation

Notkin, Jerome J., et al. The How and Why Wonder Book of Machines. Wonder Books, 1960.