APA استشهاد

Kral, T. (1994). Economic Consideration: English through Content : Applied Economics. Materials Development and Review Branch.

استشهاد بنمط شيكاغو

Kral, Thomas. Economic Consideration: English Through Content : Applied Economics. Washington: Materials Development and Review Branch, 1994.

MLA استشهاد

Kral, Thomas. Economic Consideration: English Through Content : Applied Economics. Materials Development and Review Branch, 1994.