APA (7th ed.) Citation

Libia, C. B. M. The Challenge of Effective Vocabulary Teaching. Universidad Nacional de Colombia.

Chicago Style (17th ed.) Citation

Libia, Cárdenas B. Melba. The Challenge of Effective Vocabulary Teaching. Universidad Nacional de Colombia.

MLA (9th ed.) Citation

Libia, Cárdenas B. Melba. The Challenge of Effective Vocabulary Teaching. Universidad Nacional de Colombia.

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