APA

Ashlock P., Grant M. & Ashlock Learning Center. (1972). Educational therapy materials from the Ashlock Learning Center. Springfield, Ill: Thomas.

Chicago

Ashlock Patrick, Grant Marie and Ashlock Learning Center. 1972. Educational therapy materials from the Ashlock Learning Center. Springfield, Ill: Thomas.

Harvard

Ashlock P., Grant M. and Ashlock Learning Center. (1972). Educational therapy materials from the Ashlock Learning Center. Springfield, Ill: Thomas.

MLA

Ashlock Patrick, Grant Marie and Ashlock Learning Center. Educational therapy materials from the Ashlock Learning Center. Springfield, Ill: Thomas. 1972.