APA-viite (7. p.)

Harrington, H. J., Esseling, E. K. C., & Nimwegen, H. v. (1997). Business process improvement workbook: Documentation, analysis, design, and management of business process improvement. McGraw-Hill.

Chicago-viite (17. p.)

Harrington, H. J., E. K. C. Esseling, ja H. van Nimwegen. Business Process Improvement Workbook: Documentation, Analysis, Design, and Management of Business Process Improvement. New York: McGraw-Hill, 1997.

MLA-viite (9. p.)

Harrington, H. J., et al. Business Process Improvement Workbook: Documentation, Analysis, Design, and Management of Business Process Improvement. McGraw-Hill, 1997.