APA-viite (7. p.)

WILLBORN, W. (1994). Global Management Of Quality Assurance Systems Walter Willborn, T.c. Edwin Cheng. McGraw-Hill.

Chicago-viite (17. p.)

WILLBORN, Walter. Global Management Of Quality Assurance Systems Walter Willborn, T.c. Edwin Cheng. McGraw-Hill, 1994.

MLA-viite (8. p.)

WILLBORN, Walter. Global Management Of Quality Assurance Systems Walter Willborn, T.c. Edwin Cheng. McGraw-Hill, 1994.

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