Adler, B. (1987). 4 x 6: Bettina Adler. Writers Forum.
Cita Chicago (17th ed.)Adler, Bettina. 4 X 6: Bettina Adler. London: Writers Forum, 1987.
Cita MLA (8th ed.)Adler, Bettina. 4 X 6: Bettina Adler. Writers Forum, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.