APA (7th ed.) Citation

Schank, R. C., & Abelson, R. P. (1977). Scripts, plans, goals and understanding : an inquiry into human knowledge structures / (by) Roger C. Schank, Robert P. Abelson: An inquiry into human knowledge structures. Erlbaum.

Chicago Style (17th ed.) Citation

Schank, Roger C., and Robert P. Abelson. Scripts, Plans, Goals and Understanding : An Inquiry into Human Knowledge Structures / (by) Roger C. Schank, Robert P. Abelson: An Inquiry into Human Knowledge Structures. Hillsdale, N.J.: Erlbaum, 1977.

MLA (9th ed.) Citation

Schank, Roger C., and Robert P. Abelson. Scripts, Plans, Goals and Understanding : An Inquiry into Human Knowledge Structures / (by) Roger C. Schank, Robert P. Abelson: An Inquiry into Human Knowledge Structures. Erlbaum, 1977.

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