Παραπομπή APA

Vivek K Gupta & Manoj Kaushik. Upkar's objective commerce. Upkar prakashan.

Παραπομπή Chicago Style

Vivek K Gupta και Manoj Kaushik. Upkar's Objective Commerce. Agra: Upkar prakashan.

Παραπομπή MLA

Vivek K Gupta και Manoj Kaushik. Upkar's Objective Commerce. Upkar prakashan.