National Association of Geoscience Teachers. (1996). Journal of geoscience education. National Association of Geoscience Teachers.
Cita Chicago (17th ed.)National Association of Geoscience Teachers. Journal of Geoscience Education. Bellingham, Wash.: National Association of Geoscience Teachers, 1996.
Cita MLA (9th ed.)National Association of Geoscience Teachers. Journal of Geoscience Education. National Association of Geoscience Teachers, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.