APA

Hesse E. W., Orjuela H. H., . (1970). Spanish conversational review grammar. New York: Van Nostrand Reinhold.

Chicago

Hesse Everett Wesley, Orjuela Héctor H, . 1970. Spanish conversational review grammar. New York: Van Nostrand Reinhold.

Harvard

Hesse E. W., Orjuela H. H., . (1970). Spanish conversational review grammar. New York: Van Nostrand Reinhold.

MLA

Hesse Everett Wesley, Orjuela Héctor H, . Spanish conversational review grammar. New York: Van Nostrand Reinhold. 1970.