Being in the mentoring field, I frequently explore the internet to learn about new publications/resources. Sadly, a lot of what is written is either repetitious or just not helpful. There is a resource that I've had in my library that others may also find useful: Mentoring Dilemmas: Developmental Relationships Within Multicultural Organizations edited by Murrell, Crosby and Ely published in 1999. Focused on mentoring and diversity, it has interesting things to say about Asian, African American and gender pairings both in research and in practice. I don't often recommend books but this is one of the better ones I've read and found it helpful in my mentoring training sessions.