APA (7th ed.) Citation

Herberts, R. E. (1971). Simplified versus complex drawings as representations of real objects at selected grade levels. [publisher not identified].

Chicago Style (17th ed.) Citation

Herberts, Roger E. Simplified Versus Complex Drawings as Representations of Real Objects at Selected Grade Levels. [Place of publication not identified]: [publisher not identified], 1971.

MLA (9th ed.) Citation

Herberts, Roger E. Simplified Versus Complex Drawings as Representations of Real Objects at Selected Grade Levels. [publisher not identified], 1971.