APA استشهاد

Bithell, J., & Dunstan, A. C. (1925). A German course for science students. Methuen & co. ltd..

استشهاد بنمط شيكاغو

Bithell, Jethro, و A. C. Dunstan. A German Course for Science Students. London: Methuen & co. ltd., 1925.

MLA استشهاد

Bithell, Jethro, و A. C. Dunstan. A German Course for Science Students. Methuen & co. ltd., 1925.