(1970). Learner's dictionary: : illustrated in colour. McGraw-Hill.
Cita Chicago (17th ed.)Learner's Dictionary: : Illustrated in Colour. New York: McGraw-Hill, 1970.
Cita MLA (9th ed.)Learner's Dictionary: : Illustrated in Colour. McGraw-Hill, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.