Ferriss, T. The 4-hour work week: Escape the 9-5, live anywhere and join the new rich by timothy ferriss (First edition.). Crown Publishers.
Chicago-referens (17:e uppl.)Ferriss, Timothy. The 4-hour Work Week: Escape the 9-5, Live Anywhere and Join the New Rich by Timothy Ferriss. First edition. New York: Crown Publishers.
MLA-referens (9:e uppl.)Ferriss, Timothy. The 4-hour Work Week: Escape the 9-5, Live Anywhere and Join the New Rich by Timothy Ferriss. First edition. Crown Publishers.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.