Cita APA (7th ed.)

Engel, J. F., Talarzyk, W. W., & Larson, C. M. (1971). Cases in promotional strategy. Richard D. Irwin.

Cita Chicago (17th ed.)

Engel, James F., W. Wayne Talarzyk, i Carl M. Larson. Cases in Promotional Strategy. Homewood: Richard D. Irwin, 1971.

Cita MLA (9th ed.)

Engel, James F., et al. Cases in Promotional Strategy. Richard D. Irwin, 1971.