APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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