APA (7th ed.) Citation

Hertling, L. (1960). El cielo. Sal Terrae.

Chicago Style (17th ed.) Citation

Hertling, Ludwig. El Cielo. Santander: Sal Terrae, 1960.

MLA (9th ed.) Citation

Hertling, Ludwig. El Cielo. Sal Terrae, 1960.

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