Παραπομπή APA

Sharma, D. K., & Gupta, A. K. (2009). Business research methods. Vayu Education of India.

Παραπομπή Chicago Style

Sharma, D K., και A K. Gupta. Business Research Methods. New Delhi: Vayu Education of India, 2009.

Παραπομπή MLA

Sharma, D K., και A K. Gupta. Business Research Methods. Vayu Education of India, 2009.