APA (7th ed.) Citation

Nation, I. S. P. (1990). Teaching r Learning Vocabulary / I.S.P. Nation. Heinle r Heinle Publishers.

Chicago Style (17th ed.) Citation

Nation, I. S. P. Teaching R Learning Vocabulary / I.S.P. Nation. Heinle r Heinle Publishers, 1990.

MLA (8th ed.) Citation

Nation, I. S. P. Teaching R Learning Vocabulary / I.S.P. Nation. Heinle r Heinle Publishers, 1990.

Warning: These citations may not always be 100% accurate.