APA (7th ed.) Citation

Pearson, H. C. (1951). Essentials of English. Fifty-[sixth] grade. American Book.

Chicago Style (17th ed.) Citation

Pearson, Henry Carr. Essentials of English. Fifty-[sixth] Grade. New York: American Book, 1951.

MLA (9th ed.) Citation

Pearson, Henry Carr. Essentials of English. Fifty-[sixth] Grade. American Book, 1951.