APA (7 वां संस्करण) प्रशस्ति पत्र

SINGH P N. (2004). TRAINING FOR MANAGEMENT DEVELOPMENT (8TH.). P N SINGH CENTRE FOR HRD.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

SINGH P N. TRAINING FOR MANAGEMENT DEVELOPMENT. 8TH. MUMBAI: P N SINGH CENTRE FOR HRD, 2004.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

SINGH P N. TRAINING FOR MANAGEMENT DEVELOPMENT. 8TH. P N SINGH CENTRE FOR HRD, 2004.