Cita APA (7th ed.)
Burka, J. B., & I.Yuen, L. M. Procrastination: Why you do it, what to do about it / Jane B. Burka, Ph.D. & Lenora M. Yuen, Ph.D.
Cita Chicago (17th ed.)
Burka, Jane B., i Lenora M. I.Yuen. Procrastination: Why You Do It, What to Do About It / Jane B. Burka, Ph.D. & Lenora M. Yuen, Ph.D.
Cita MLA (9th ed.)
Burka, Jane B., i Lenora M. I.Yuen. Procrastination: Why You Do It, What to Do About It / Jane B. Burka, Ph.D. & Lenora M. Yuen, Ph.D.
Atenció: Aquestes cites poden no estar 100% correctes.