Cita APA (7th ed.)
West, P. (1933). A Study of ability grouping in the elementary school. Teachers College, Columbia Univ.
Cita Chicago (17th ed.)
West, Parl. A Study of Ability Grouping in the Elementary School. New York: Teachers College, Columbia Univ, 1933.
Cita MLA (9th ed.)
West, Parl. A Study of Ability Grouping in the Elementary School. Teachers College, Columbia Univ, 1933.
Atenció: Aquestes cites poden no estar 100% correctes.