Cita APA (7a ed.)
(1977). Yesterday and today in the U.S.A.: Intermediate esl reader. Prentice-Hall.
Cita Chicago Style (17a ed.)
Yesterday and Today in the U.S.A.: Intermediate Esl Reader. Englewood Cliffs: Prentice-Hall, 1977.
Cita MLA (9a ed.)
Yesterday and Today in the U.S.A.: Intermediate Esl Reader. Prentice-Hall, 1977.
Precaución: Estas citas no son 100% exactas.