APA

(2013). Portafolio - No.8 (ago.-sep. 2013). : .

Chicago

2013. Portafolio - No.8 (ago.-sep. 2013). : .

Harvard

(2013). Portafolio - No.8 (ago.-sep. 2013). : .

MLA

Portafolio - No.8 (ago.-sep. 2013). : . 2013.