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.
Warning: These citations may not always be 100% accurate.