APA (7th ed.) Citation

Gray, J. G. (1968). The promise of wisdom: An introduction to philosophy of education. Lippincott.

Chicago Style (17th ed.) Citation

Gray, J. Glenn. The Promise of Wisdom: An Introduction to Philosophy of Education. Philadelphia: Lippincott, 1968.

MLA (9th ed.) Citation

Gray, J. Glenn. The Promise of Wisdom: An Introduction to Philosophy of Education. Lippincott, 1968.

Warning: These citations may not always be 100% accurate.