SEMLER RICARDO. (2004). SEVEN DAY WEEKEND: BETTER WAY TO WORK IN THE 21ST CENTURY. ARROW BOOKS.
Chicago-referens (17:e uppl.)SEMLER RICARDO. SEVEN DAY WEEKEND: BETTER WAY TO WORK IN THE 21ST CENTURY. LONDON: ARROW BOOKS, 2004.
MLA-referens (9:e uppl.)SEMLER RICARDO. SEVEN DAY WEEKEND: BETTER WAY TO WORK IN THE 21ST CENTURY. ARROW BOOKS, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.