Yamakami, Toshihiko (June 2011). "A Four-Layer Success Factor View Model of Mobile Social Games: Analysis of Mobage Success in Japan". 2011 10th International Conference on Mobile Business. hlm.114–118. doi:10.1109/ICMB.2011.36. ISBN978-1-4577-0497-0. S2CID28809987.
Yamakami, Toshihiko (June 2011). "A Four-Layer Success Factor View Model of Mobile Social Games: Analysis of Mobage Success in Japan". 2011 10th International Conference on Mobile Business. hlm.114–118. doi:10.1109/ICMB.2011.36. ISBN978-1-4577-0497-0. S2CID28809987.