APA

(1981). Journal of Marketing en Espanol - No.21. México: American Marketing Association.

Chicago

1981. Journal of Marketing en Espanol - No.21. México: American Marketing Association.

Harvard

(1981). Journal of Marketing en Espanol - No.21. México: American Marketing Association.

MLA

Journal of Marketing en Espanol - No.21. México: American Marketing Association. 1981.