APA (7th ed.) Citation

Boslough, J. (1986). El universo de Stephen Hawking. Salvat.

Chicago Style (17th ed.) Citation

Boslough, John. El Universo De Stephen Hawking. Barcelona: Salvat, 1986.

MLA (9th ed.) Citation

Boslough, John. El Universo De Stephen Hawking. Salvat, 1986.

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