APA Citation

Nation, P., & Nation, P. (2009). 4000 essential english words 5. [Lugar de publicación no identificado]: Compass Publishing.

Chicago Style Citation

Nation, Paul, and Paul Nation. 4000 Essential English Words 5. [Lugar de publicación no identificado]: Compass Publishing, 2009.

MLA Citation

Nation, Paul, and Paul Nation. 4000 Essential English Words 5. [Lugar de publicación no identificado]: Compass Publishing, 2009.

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