APA (7th ed.) Citation

Helgesen, M. (2002). First impact. Longman Asia ELT.

Chicago Style (17th ed.) Citation

Helgesen, Marc. First Impact. Hong Kong: Longman Asia ELT, 2002.

MLA (9th ed.) Citation

Helgesen, Marc. First Impact. Longman Asia ELT, 2002.

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