'Modern Statistics for the Social and Behavioral Sciences' by Rand Wilcox is a key resource for understanding advanced statistical methods. With practical examples and R code, it's ideal for students and professionals aiming to apply modern techniques in their research.

'Learning from Strangers' by Robert S. Weiss is an essential guide to qualitative research, focusing on interviewing techniques. It offers practical advice, ethical considerations, and methodological insights for researchers aiming to understand human behavior through in-depth interviews with strangers.