SILVERSTEIN BARRY. (2007). BEST PRACTICES: MANAGING PEOPLE. HARPER COLLINS PUBLISHERS.
Chicago-viite (17. p.)SILVERSTEIN BARRY. BEST PRACTICES: MANAGING PEOPLE. NEW YORK: HARPER COLLINS PUBLISHERS, 2007.
MLA-viite (9. p.)SILVERSTEIN BARRY. BEST PRACTICES: MANAGING PEOPLE. HARPER COLLINS PUBLISHERS, 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.