Tomlinson, K.L.; Sanchez, J.A.; Spasser, M.A.; Schnase, J.L. (1998), "Managing cognitive overload in the Flora of North America project", Proceedings of the Thirty-First Hawaii International Conference on System Sciences, 2, hlm. 296, CiteSeerX10.1.1.20.7010, doi:10.1109/HICSS.1998.651712, ISBN978-0-8186-8255-1
Tomlinson, K.L.; Sanchez, J.A.; Spasser, M.A.; Schnase, J.L. (1998), "Managing cognitive overload in the Flora of North America project", Proceedings of the Thirty-First Hawaii International Conference on System Sciences, 2, hlm. 296, CiteSeerX10.1.1.20.7010, doi:10.1109/HICSS.1998.651712, ISBN978-0-8186-8255-1