Harding, R. A. An investigation to determine levels of Piagetian cognitive functioning among college undergraduate music majors. University Microfilms International.
Citazione stile Chigago Style (17a edizione)Harding, Robert Allen. An Investigation to Determine Levels of Piagetian Cognitive Functioning Among College Undergraduate Music Majors. Ann Arbor, Mich.: University Microfilms International.
Citatione MLA (8a ed.)Harding, Robert Allen. An Investigation to Determine Levels of Piagetian Cognitive Functioning Among College Undergraduate Music Majors. University Microfilms International.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.