APA Style
Harris, Michael. ().
Challenges Students Book 1 (Class CD 1) .
:
Longman.
Chicago Style
Harris, Michael.
Challenges Students Book 1 (Class CD 1).
:
Longman,
.
.
MLA Style
Harris, Michael.
Challenges Students Book 1 (Class CD 1).
:
Longman,
.
.
Turabian Style
Harris, Michael.
Challenges Students Book 1 (Class CD 1).
:
Longman,
.
.