Cita APA (7a ed.)

Heyl, H. H. (1960). Spelling. New York state education department.

Cita Chicago Style (17a ed.)

Heyl, Helen Hay. Spelling. Albany: New York state education department, 1960.

Cita MLA (9a ed.)

Heyl, Helen Hay. Spelling. New York state education department, 1960.