APA

Gwynn J. M., . (1966). Theory and practice of supervision. N.Y: Dodd, Mead.

Chicago

Gwynn John Minor, . 1966. Theory and practice of supervision. N.Y: Dodd, Mead.

Harvard

Gwynn J. M., . (1966). Theory and practice of supervision. N.Y: Dodd, Mead.

MLA

Gwynn John Minor, . Theory and practice of supervision. N.Y: Dodd, Mead. 1966.