(美)Robert C. Martin著 (美)Robert E.Slavin著 (美)Robert A. Heinlein著 (美)Robert K. Jackler著 (美)Robert F. Weaver著 (美)Robert F.Weaver著 (美)Robert S.Feldman著 (美)Robert G. Webster原著 (美)Robert I. Kabacoff著 (美)Robert J. Sternberg著