APA (7th ed.) Citation

Spalding, J. L. (1968). Opportunity, and other essays and addresses. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Spalding, John Lancaster. Opportunity, and Other Essays and Addresses. Freeport, N.Y.: Books for Libraries Press, 1968.

MLA (9th ed.) Citation

Spalding, John Lancaster. Opportunity, and Other Essays and Addresses. Books for Libraries Press, 1968.

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