APA

Clark R. C. E. . M., .e-Learning and the science of instruction : proven guidelines for consumers and designers of multimedia learning. the United States of America:Jon Wiley and Sons/Pfeiffer,2008: .

Chicago

Clark Ruth Colvin/Richard E Mayer, .e-Learning and the science of instruction : proven guidelines for consumers and designers of multimedia learning. the United States of America:Jon Wiley and Sons/Pfeiffer,2008: .

Harvard

Clark R. C. E. . M., .e-Learning and the science of instruction : proven guidelines for consumers and designers of multimedia learning. the United States of America:Jon Wiley and Sons/Pfeiffer,2008: .

MLA

Clark Ruth Colvin/Richard E Mayer, .the United States of America:Jon Wiley and Sons/Pfeiffer,2008: . .