APA

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

Chicago

Welsch Glenn A, . 1970. Programmed learning aid for intermediate accounting. Homewood, Ill: Learning Systems Co.

Harvard

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

MLA

Welsch Glenn A, . Programmed learning aid for intermediate accounting. Homewood, Ill: Learning Systems Co. 1970.