Cita APA

Ragan, W. B. (1966). Modern elementary curriculum. [S.l.]: Holt.

Citación estilo Chicago

Ragan, William B. Modern Elementary Curriculum. [S.l.]: Holt, 1966.

Cita MLA

Ragan, William B. Modern Elementary Curriculum. [S.l.]: Holt, 1966.