APA استشهاد

Justin Paul. (2010). Business environment: Texts and cases (3rd ed.). Mc Graw Hill.

استشهاد بنمط شيكاغو

Justin Paul. Business Environment: Texts and Cases. 3rd ed. Chennai: Mc Graw Hill, 2010.

MLA استشهاد

Justin Paul. Business Environment: Texts and Cases. 3rd ed. Mc Graw Hill, 2010.