Παραπομπή APA

Ratan, S. S. (2008). Strength of materials. Tata Mc Graw - Hill.

Παραπομπή Chicago Style

Ratan, S S. Strength of Materials. New Delhi: Tata Mc Graw - Hill, 2008.

Παραπομπή MLA

Ratan, S S. Strength of Materials. Tata Mc Graw - Hill, 2008.