APA (7th ed.) Citation

Balmer, E., & Wylie, P. (1933). When worlds collide. Lippincott.

Chicago Style (17th ed.) Citation

Balmer, Edwin, and Philip Wylie. When Worlds Collide. Philadelphia: Lippincott, 1933.

MLA (9th ed.) Citation

Balmer, Edwin, and Philip Wylie. When Worlds Collide. Lippincott, 1933.

Warning: These citations may not always be 100% accurate.