APA (7th ed.) Citation

Hartley, W. H. (1950). A guide to audio-visual materials for elementary school social studies. Rambler Press.

Chicago Style (17th ed.) Citation

Hartley, William Harrison. A Guide to Audio-visual Materials for Elementary School Social Studies. [Brooklyn]: Rambler Press, 1950.

MLA (9th ed.) Citation

Hartley, William Harrison. A Guide to Audio-visual Materials for Elementary School Social Studies. Rambler Press, 1950.