Παραπομπή APA

Lenburg, J. (2007). Viva-Facts on file guide to research. Viva Books Private Limited.

Παραπομπή Chicago Style

Lenburg, Jeff. Viva-Facts on File Guide to Research. New Delhi: Viva Books Private Limited, 2007.

Παραπομπή MLA

Lenburg, Jeff. Viva-Facts on File Guide to Research. Viva Books Private Limited, 2007.