APA (7th ed.) Citation

Yourcenar, M., & Calatayud, E. (1986). Opus nigrum (10a ed.). Alfaguara.

Chicago Style (17th ed.) Citation

Yourcenar, Marguerite, and Emma Calatayud. Opus Nigrum. 10a ed. Madrid: Alfaguara, 1986.

MLA (8th ed.) Citation

Yourcenar, Marguerite, and Emma Calatayud. Opus Nigrum. 10a ed. Alfaguara, 1986.

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