McCallum, G. P. (1982). Words people use: Passive/active vocabulary skills for students of English as a second language. New York: Harper & Row.
Citação norma ChicagoMcCallum, George P. Words People Use: Passive/active Vocabulary Skills for Students of English As a Second Language. New York: Harper & Row, 1982.
Citação norma MLAMcCallum, George P. Words People Use: Passive/active Vocabulary Skills for Students of English As a Second Language. New York: Harper & Row, 1982.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.