Стиль цитування APA (7-ме видання)

(1994). Powerful writing skills a quick and handy guide for any manager or business owner / written by Richard Andersen. [electronic resource].

Чикаго стиль цитування (17-те видання)

Powerful Writing Skills a Quick and Handy Guide for Any Manager or Business Owner / Written by Richard Andersen. [electronic Resource]. 1994.

Стиль цитування MLA (9-ме видання)

Powerful Writing Skills a Quick and Handy Guide for Any Manager or Business Owner / Written by Richard Andersen. [electronic Resource]. 1994.