Παραπομπή APA

Viswanathan, C. G. (1967). Public library operations and services (2nd ed.).

Παραπομπή Chicago Style

Viswanathan, C. G. Public Library Operations and Services. 2nd ed. 1967.

Παραπομπή MLA

Viswanathan, C. G. Public Library Operations and Services. 2nd ed. 1967.