APA

Kerr P., . (2003). Inside Out. Workbook with Key: Elementary. : Macmillan Publishing Co., Inc.

Chicago

Kerr Philip, . 2003. Inside Out. Workbook with Key: Elementary. : Macmillan Publishing Co., Inc.

Harvard

Kerr P., . (2003). Inside Out. Workbook with Key: Elementary. : Macmillan Publishing Co., Inc.

MLA

Kerr Philip, . Inside Out. Workbook with Key: Elementary. : Macmillan Publishing Co., Inc. 2003.