APA-viite

IIG Viet Nam. English for effective communication (Intermediate) student's book: Specially designed for the TOEIC test.

Chicago-tyylinen lähdeviittaus

IIG Viet Nam. English for Effective Communication (Intermediate) Student's Book: Specially Designed for the TOEIC Test.

MLA-viite

IIG Viet Nam. English for Effective Communication (Intermediate) Student's Book: Specially Designed for the TOEIC Test.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.