Παραπομπή APA

Sharma, C. K., sudhesh kumar, & neetu singh. (2009). Digital library and preservation. Shree Publishers & Distributors.

Παραπομπή Chicago Style

Sharma, C K., sudhesh kumar, και neetu singh. Digital Library and Preservation. New Delhi: Shree Publishers & Distributors, 2009.

Παραπομπή MLA

Sharma, C K., et al. Digital Library and Preservation. Shree Publishers & Distributors, 2009.