APA (7th ed.) Citation

Armstrong, W. H. (1967). An experimental investigation of the instructional effectiveness of published programed instruction materials vs. individualized instruction in area vocational-technical schools. [publisher not identified].

Chicago Style (17th ed.) Citation

Armstrong, William Harrell. An Experimental Investigation of the Instructional Effectiveness of Published Programed Instruction Materials Vs. Individualized Instruction in Area Vocational-technical Schools. [Place of publication not identified]: [publisher not identified], 1967.

MLA (9th ed.) Citation

Armstrong, William Harrell. An Experimental Investigation of the Instructional Effectiveness of Published Programed Instruction Materials Vs. Individualized Instruction in Area Vocational-technical Schools. [publisher not identified], 1967.