Hayden, R. E. (1956). Mastering American English: A handbook-workbook of essentials. Prentice-Hall.
Cita Chicago (17th ed.)Hayden, Rebecca E. Mastering American English: A Handbook-workbook of Essentials. Englewood Cliffs, N. J: Prentice-Hall, 1956.
Cita MLA (9th ed.)Hayden, Rebecca E. Mastering American English: A Handbook-workbook of Essentials. Prentice-Hall, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.