Cita APA (7a ed.)

Nation I.S.P. (1990). Teaching and learning vocabulary (1st edition.). Heinle & Heinle.

Cita Chicago Style (17a ed.)

Nation I.S.P. Teaching and Learning Vocabulary. 1st edition. Massachusetts: Heinle & Heinle, 1990.

Cita MLA (8a ed.)

Nation I.S.P. Teaching and Learning Vocabulary. 1st edition. Heinle & Heinle, 1990.