APA (7th ed.) Citation

Gleason, R. W. (1960). El mundo futuro. Sal terrae.

Chicago Style (17th ed.) Citation

Gleason, Robert W. El Mundo Futuro. Santander: Sal terrae, 1960.

MLA (9th ed.) Citation

Gleason, Robert W. El Mundo Futuro. Sal terrae, 1960.

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