APA (7th ed.) Citation

Calatayud, E. (1988). Opus nigrum (12a ed.). Alfaguara.

Chicago Style (17th ed.) Citation

Calatayud, Emma. Opus Nigrum. 12a ed. Madrid: Alfaguara, 1988.

MLA (9th ed.) Citation

Calatayud, Emma. Opus Nigrum. 12a ed. Alfaguara, 1988.

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