(美)Roger B. Nelsen编 (美)Roger B.Nelsen编 (美)Roger F.Jones主编 (美)Roger S. Pressman著 (美)Roger B.Boulton等著 [美]Roger Olsen编著 (美)Jane Nelsen著 (美)Roger A.Grimes著 (美)Roger Bruns著 (美)Roger W.Schmenner著