Cita APA (7th ed.)
Lo, B. (2010). GPS and geocaching in education (First edition.). International Society for Technology in Education.
Cita Chicago (17th ed.)
Lo, Burt. GPS and Geocaching in Education. First edition. Eugene, Oregon: International Society for Technology in Education, 2010.
Cita MLA (9th ed.)
Lo, Burt. GPS and Geocaching in Education. First edition. International Society for Technology in Education, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.