Gaya APA

Rojas, P, M., al., E. (1952). Fries American English series book one: For the study of English as a second language . Boston: D.C. Heath and Company.

Gaya MLA

Rojas, Pauline, M.., al., Et. "Fries American English series book one: For the study of English as a second language". Boston: D.C. Heath and Company, 1952. Text.