APA (7th ed.) Citation

Niven, L. Mundo anillo (1a. ed.). Hyspamérica.

Chicago Style (17th ed.) Citation

Niven, Larry. Mundo Anillo. 1a. ed. Madrid: Hyspamérica.

MLA (9th ed.) Citation

Niven, Larry. Mundo Anillo. 1a. ed. Hyspamérica.

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