Professional researchers can substantially gain from undergraduate students' hard work, energy, curiosity, and fresh perspectives. Yet, being an effective mentor is challenging as well as rewarding.  The resources below can be of assistance:

Same-ethnicity mentors boost students' commitment to STEM careers. Syed, Moin, Goza, Barbara K., Chemers, Martin M., Zurbriggen, Eileen L. Child Development. May/Jun 2012, Vol. 83 Issue 3, p 896-910.

Adviser, Teacher, Role Model, Friend: On Being a Mentor to Students in the Sciences and Engineering.  Download free pdf.

Entering Mentoring - a curriculum designed for mentor training across the STEM disciplines

Nature's Guide for Mentors- "Having a good mentor early in your career can mean the difference between success and failure in any field." Adrian Lee, Carina Dennis & Philip Campbell, volume 447, 791-797, 14 June 2007.

Mentoring as a Socializing Activity link from the Council on Undergraduate Research

Mentoring Undergraduates in Summer Research Programs from the Leadership Alliance

Mentoring Manual from Pathways to Science

Key Diversity References from Pathways to Science

Study Examines Qualities of Good and Bad Mentoring Relationships from UCSF News