Gaya APA

Marc Helgesen, dkk.. (2010). English firsthand success (Ed.1). Hong Kong: pearson longman.

Gaya Chicago

Marc Helgesen, dkk.. English firsthand success. Ed.1 Hong Kong: pearson longman, 2010. Text.

Gaya MLA

Marc Helgesen, dkk.. English firsthand success. Ed.1 Hong Kong: pearson longman, 2010. Text.

Gaya Turabian

Marc Helgesen, dkk.. English firsthand success. Ed.1 Hong Kong: pearson longman, 2010. Print.