A Practical Guide to Quantitative Finance Interviews by Xinfeng Zhou
Quant Job Interview Questions and Answers (second edition) by Mark Joshi
150 Most Frequently Asked Questions on Quant Interviews, Second Edition (Pocket Book Guides for Quant Interviews) by Dan Stefanica and Rados Radoicic and Tai-Ho Wang
Heard on the Street: Quantitative Questions from Wall Street Job Interviews by Timothy Falcon Crack
[For those more software inclined] Cracking the Coding Interview by Gayle Laakmann McDowell