MLA

Gilman, Arthur, and Helen Keller. Miss Helen Adams Keller's First Year of College Preparatory Work. Washington City: Gibson, 1897.

APA

Gilman, A., & Keller, H. (1897). Miss Helen Adams Keller's first year of college preparatory work. Washington City: Gibson.

Chicago

Gilman, Arthur, and Helen Keller. Miss Helen Adams Keller's First Year of College Preparatory Work. Washington City: Gibson, 1897.