APA (7th ed.) Citation

Osborn, S. (1987). Free things for teachers (Rev. and updated.). Perigee Books.

Chicago Style (17th ed.) Citation

Osborn, Susan. Free Things for Teachers. Rev. and updated. New York, N.Y.: Perigee Books, 1987.

MLA (9th ed.) Citation

Osborn, Susan. Free Things for Teachers. Rev. and updated. Perigee Books, 1987.