Citazione Stile APA (7a Edizione)

Madrigal, M., & Warhol, A. (2001). Madrigal's magic key to Spanish. Broadway Books.

Citazione stile Chigago Style (17a edizione)

Madrigal, Margarita, e Andy Warhol. Madrigal's Magic Key to Spanish. New York, USA: Broadway Books, 2001.

Citatione MLA (9a ed.)

Madrigal, Margarita, e Andy Warhol. Madrigal's Magic Key to Spanish. Broadway Books, 2001.