APA (7e ed.) Bronvermelding

HAIDUK, H. P., & ROSS, P. W. (1991). Instructor's manual and key for increasing your produc-tivity with lotus release 2.2. Glencoe.

Chicago (17e ed.) Bronvermelding

HAIDUK, H. Paul, en Paul W. ROSS. Instructor's Manual and Key for Increasing Your Produc-tivity with Lotus Release 2.2. Lake Forest: Glencoe, 1991.

MLA (9e ed.) Bronvermelding

HAIDUK, H. Paul, en Paul W. ROSS. Instructor's Manual and Key for Increasing Your Produc-tivity with Lotus Release 2.2. Glencoe, 1991.