Hansen, T. A., & Slesnick, I. L. (2006). Adventures in paleontology: 36 classroom fossil activities. NSTA Press.
Cita Chicago Style (17a ed.)Hansen, Thor A., y Irwin L. Slesnick. Adventures in Paleontology: 36 Classroom Fossil Activities. Arlington, VA: NSTA Press, 2006.
Cita MLA (8a ed.)Hansen, Thor A., y Irwin L. Slesnick. Adventures in Paleontology: 36 Classroom Fossil Activities. NSTA Press, 2006.
Precaución: Estas citas no son 100% exactas.