APA

Perntiss T., Rooney R., . (2007). Miss Keen Needs Help. Pleham, New York: Benchmark Education Co.

Chicago

Perntiss Timothy, Rooney Ronnie, . 2007. Miss Keen Needs Help. Pleham, New York: Benchmark Education Co.

Harvard

Perntiss T., Rooney R., . (2007). Miss Keen Needs Help. Pleham, New York: Benchmark Education Co.

MLA

Perntiss Timothy, Rooney Ronnie, . Miss Keen Needs Help. Pleham, New York: Benchmark Education Co. 2007.