APA (7th ed.) Citation

Ruskin, R. S. (1974). The personalized system of instruction: An educational alternative. American Association for Higher Education.

Chicago Style (17th ed.) Citation

Ruskin, Robert S. The Personalized System of Instruction: An Educational Alternative. Washington: American Association for Higher Education, 1974.

MLA (8th ed.) Citation

Ruskin, Robert S. The Personalized System of Instruction: An Educational Alternative. American Association for Higher Education, 1974.