Holden, P. R. (2015). Virtually Free Marketing: Harnessing the Power of the Web for your Small Business. Bloomsbury Publishing.
Chicago-Zitierstil (17. Ausg.)Holden, Philip R. Virtually Free Marketing: Harnessing the Power of the Web for Your Small Business. London: Bloomsbury Publishing, 2015.
MLA-Zitierstil (9. Ausg.)Holden, Philip R. Virtually Free Marketing: Harnessing the Power of the Web for Your Small Business. Bloomsbury Publishing, 2015.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.