APA (7th ed.) Citation

Yeats, W. B., & Tovar, J. (1977). Símbolos. Era.

Chicago Style (17th ed.) Citation

Yeats, W. B., and Juan Tovar. Símbolos. Era, 1977.

MLA (9th ed.) Citation

Yeats, W. B., and Juan Tovar. Símbolos. Era, 1977.

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