APA (7th ed.) Citation

Hancox, F. J. (1969). An investigation of programmed instruction in mathematics as a measure of electronic achievement. [publisher not identified].

Chicago Style (17th ed.) Citation

Hancox, Frederick James. An Investigation of Programmed Instruction in Mathematics as a Measure of Electronic Achievement. [Place of publication not identified]: [publisher not identified], 1969.

MLA (9th ed.) Citation

Hancox, Frederick James. An Investigation of Programmed Instruction in Mathematics as a Measure of Electronic Achievement. [publisher not identified], 1969.