Cita APA (7a ed.)
(1999). Time Management & Personal Development. Thorogood Publishing Ltd.
Cita Chicago Style (17a ed.)
Time Management & Personal Development. Thorogood Publishing Ltd, 1999.
Cita MLA (9a ed.)
Time Management & Personal Development. Thorogood Publishing Ltd, 1999.
Precaución: Estas citas no son 100% exactas.