APA (7e ed.) Bronvermelding

Welsch, G. A. (1970). Programmed learning aid for intermediate accounting. Learning Systems Co.

Chicago (17e ed.) Bronvermelding

Welsch, Glenn A. Programmed Learning Aid for Intermediate Accounting. Homewood, Ill.: Learning Systems Co, 1970.

MLA (8e ed.) Bronvermelding

Welsch, Glenn A. Programmed Learning Aid for Intermediate Accounting. Learning Systems Co, 1970.