Ball, G. (2015). History skills: The past is another country: skills for helping you navigate it (NCEA=National Certificate of Educational Achievement, 1st edition.). Nelson, Cengage Learning.
Citazione stile Chigago Style (17a edizione)Ball, Graeme. History Skills: The Past Is Another Country: Skills for Helping You Navigate It. NCEA=National Certificate of Educational Achievement, 1st edition. South Melbourne, Australia: Nelson, Cengage Learning, 2015.
Citatione MLA (9a ed.)Ball, Graeme. History Skills: The Past Is Another Country: Skills for Helping You Navigate It. NCEA=National Certificate of Educational Achievement, 1st edition. Nelson, Cengage Learning, 2015.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.