Lo, B. (2010). GPS and geocaching in education (First edition.). International Society for Technology in Education.
Citazione stile Chigago Style (17a edizione)Lo, Burt. GPS and Geocaching in Education. First edition. Eugene, Oregon: International Society for Technology in Education, 2010.
Citatione MLA (9a ed.)Lo, Burt. GPS and Geocaching in Education. First edition. International Society for Technology in Education, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.