Cita APA (7a ed.)

Dahllöf, U. S. (1971). Ability grouping, content validity, and curriculum process analysis. Teachers College Press.

Cita Chicago Style (17a ed.)

Dahllöf, Urban S. Ability Grouping, Content Validity, and Curriculum Process Analysis. New York: Teachers College Press, 1971.

Cita MLA (9a ed.)

Dahllöf, Urban S. Ability Grouping, Content Validity, and Curriculum Process Analysis. Teachers College Press, 1971.