Penggayaan APA

BARKER, Alan. (2011). Improve your communication skills . London: Kogan Page.

Chicago Style

BARKER, Alan. Improve your communication skills. London: Kogan Page, 2011. Buku.

MLA Style

BARKER, Alan. Improve your communication skills. London: Kogan Page, 2011. Buku.

Turabian Style

BARKER, Alan. Improve your communication skills. London: Kogan Page, 2011. Buku.