Robert C. Lugton. (1986). American topics: A reading-vocabulary text for speakers of English as a second language. New York: Prentice-Hall Regent.
Citação norma ChicagoRobert C. Lugton. American Topics: A Reading-vocabulary Text for Speakers of English As a Second Language. New York: Prentice-Hall Regent, 1986.
Citação norma MLARobert C. Lugton. American Topics: A Reading-vocabulary Text for Speakers of English As a Second Language. New York: Prentice-Hall Regent, 1986.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.