APA استشهاد

Kriefman, B., & Stevens, P. (1988). Work out accounting: `A` Level.

استشهاد بنمط شيكاغو

Kriefman, B., و P. Stevens. Work Out Accounting: `A` Level. London, Macmillan, 1988.

MLA استشهاد

Kriefman, B., و P. Stevens. Work Out Accounting: `A` Level. 1988.