Παραπομπή APA

Gupta's Joint CSIR - UGC NET physical sciences. Ramesh Pub House.

Παραπομπή Chicago Style

Gupta's Joint CSIR - UGC NET Physical Sciences. New Delhi: Ramesh Pub House.

Παραπομπή MLA

Gupta's Joint CSIR - UGC NET Physical Sciences. Ramesh Pub House.