Παραπομπή APA

Sen, A. K. (1969). Secretarial and administrative practice. Academic publishers.

Παραπομπή Chicago Style

Sen, Amar Kumar. Secretarial and Administrative Practice. Calcutta: Academic publishers, 1969.

Παραπομπή MLA

Sen, Amar Kumar. Secretarial and Administrative Practice. Academic publishers, 1969.