Gaya APA

Tanka, , J, T, , J. (2002). Interactions 1 : listening/speaking.-- (Ed. 4th.--). America: McGraw-Hill.

Gaya MLA

Tanka, , Judith, Tanka,, , Judith. "Interactions 1 : listening/speaking.--". Ed. 4th.-- America: McGraw-Hill, 2002. Buku.