Cita APA (7a ed.)

Russell, D. H. (1937). Characteristics of good and poor spellers: A diagnostic study. Columbia University.

Cita Chicago Style (17a ed.)

Russell, David Harris. Characteristics of Good and Poor Spellers: A Diagnostic Study. New York: Columbia University, 1937.

Cita MLA (8a ed.)

Russell, David Harris. Characteristics of Good and Poor Spellers: A Diagnostic Study. Columbia University, 1937.