APA (7th ed.) Citation

Loomer, B. M. (1962). Ability grouping and its effect upon individual achievement. [publisher not identified].

Chicago Style (17th ed.) Citation

Loomer, Bradley M. Ability Grouping and Its Effect upon Individual Achievement. [Place of publication not identified]: [publisher not identified], 1962.

MLA (9th ed.) Citation

Loomer, Bradley M. Ability Grouping and Its Effect upon Individual Achievement. [publisher not identified], 1962.