Human Resource Selection. (International Edition) 
Gatewood and Feild have definitely written the authoritative volume on selecting employees. They cover everything: legal issues, measurement, selection decision making strategies, job analysis, and the whole gamut of selection devices: application forms, biodata, interviews, ability tests, personality tests, assessment centers, integrity testing, and so on and so forth. And they cover these topics IN DEPTH — not just a brief overview.
The countless examples are very helpful. And the authors display a great dry humour. The writing is polished and clearly directed toward students, and any controversial issues are given a good, balanced treatment. It also helps that the authors are quite willing to poke fun at themselves and the intensity with which they approach a topic that, to a student, probably seems obsessively nerdy.
