Cita APA (7th ed.)
Keltner, A. ENGLISH FOR ADULT COMPETENCY BOOK 1.
Cita Chicago (17th ed.)
Keltner, Autumn. ENGLISH FOR ADULT COMPETENCY BOOK 1.
Cita MLA (9th ed.)
Keltner, Autumn. ENGLISH FOR ADULT COMPETENCY BOOK 1.
Atenció: Aquestes cites poden no estar 100% correctes.