APA (7th ed.) Citation

Helgesen, M. (2001). High impact. Longman Asia ELT.

Chicago Style (17th ed.) Citation

Helgesen, Marc. High Impact. Hong Kong: Longman Asia ELT, 2001.

MLA (9th ed.) Citation

Helgesen, Marc. High Impact. Longman Asia ELT, 2001.

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