Ferriss, T. (2008). The 4-hour workweek: Escape 9-5, live anywhere, and join the new rich. Vermilion.
Chicago Style (17th ed.) CitationFerriss, Timothy. The 4-hour Workweek: Escape 9-5, Live Anywhere, and Join the New Rich. London: Vermilion, 2008.
MLA (9th ed.) CitationFerriss, Timothy. The 4-hour Workweek: Escape 9-5, Live Anywhere, and Join the New Rich. Vermilion, 2008.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.