APA Style
Harris, M.
().
CD Challenges 3 (Class CD 1,2,3 and 4
(
Jil.3)
.
New York:
Pearson Longman Asia ELT.
MLA Style
Harris, Michael.
"CD Challenges 3 (Class CD 1,2,3 and 4".
Jil.3
New York:
Pearson Longman Asia ELT,
.
CD-ROM.