(美)Robert W.Sebesta著 (美)Robert W. Sebesta著 (美)Robert A.Pease著 (美)Robert J.Oberg等著 (美)Robert C.Seacord著 (美)Robert D. Nye著 (美)Robert F.Pierret著 (美)Robert Fisher著 (美)Robert G.Freeman著 (美)Robert Oshana著