Cita APA (7th ed.)

(2011). Essential time management: How to become more productive and effective / Brett Hilder.

Cita Chicago (17th ed.)

Essential Time Management: How to Become More Productive and Effective / Brett Hilder. 2011.

Cita MLA (9th ed.)

Essential Time Management: How to Become More Productive and Effective / Brett Hilder. 2011.

Atenció: Aquestes cites poden no estar 100% correctes.