APA

Jackson E., Rubio A., . (1984). Spanish made simple. New York: Made Simple Book.

Chicago

Jackson Eugene, Rubio Antonio, . 1984. Spanish made simple. New York: Made Simple Book.

Harvard

Jackson E., Rubio A., . (1984). Spanish made simple. New York: Made Simple Book.

MLA

Jackson Eugene, Rubio Antonio, . Spanish made simple. New York: Made Simple Book. 1984.