Becker, M. (1924). A Reader's guide book. Henry Holt.
Cita Chicago (17th ed.)Becker, May. A Reader's Guide Book. New York: Henry Holt, 1924.
Cita MLA (9th ed.)Becker, May. A Reader's Guide Book. Henry Holt, 1924.
Atenció: Aquestes cites poden no estar 100% correctes.