Tohutoro APA (7th ed.)

Barrall, I. (2004). Elementary Business English: Teacher's resource book. Pearson Education.

Tohutoru Kātū Chicago (17th ed.)

Barrall, Irene. Elementary Business English: Teacher's Resource Book. Essex: Pearson Education, 2004.

Tohutoro MLA (9th ed.)

Barrall, Irene. Elementary Business English: Teacher's Resource Book. Pearson Education, 2004.