(美)Ryan O'Hayre[等]著 (美)Ryan Lindgren著 (美)Ryan Barnett著 (美)Ryan O'Neill著 (美)Ryan Russell等著 (美)Ryan Mitchell著 (美)Ryan K.Stephens等著 (美)Ryan Dewsbury著 (美)Renan Uflacker编著 (美)Ronan Schwarz[等]著