Παραπομπή APA

Ramamrutham, S., & Narayanan, R. (2004). Strength of materials. Dhanpat Rai.

Παραπομπή Chicago Style

Ramamrutham, S., και R. Narayanan. Strength of Materials. New Delhi: Dhanpat Rai, 2004.

Παραπομπή MLA

Ramamrutham, S., και R. Narayanan. Strength of Materials. Dhanpat Rai, 2004.