APA (7th ed.) Citation

Gress, J. R., & Purpel, D. E. (1978). Curriculum: An introduction to the field. McCutchan.

Chicago Style (17th ed.) Citation

Gress, James R., and David E. Purpel. Curriculum: An Introduction to the Field. California: McCutchan, 1978.

MLA (9th ed.) Citation

Gress, James R., and David E. Purpel. Curriculum: An Introduction to the Field. McCutchan, 1978.