APA (7th ed.) Citation

Bibliographical Society of America, Gerould, W. G., & Gerould, J. T. (1938). International congresses and conference, 1840-1937: A union list of their publications available in libraries of the United States and Canada. The H. W. Wilson company.

Chicago Style (17th ed.) Citation

Bibliographical Society of America, Winifred Gregory Gerould, and James Thayer Gerould. International Congresses and Conference, 1840-1937: A Union List of Their Publications Available in Libraries of the United States and Canada. New York: The H. W. Wilson company, 1938.

MLA (9th ed.) Citation

Bibliographical Society of America, et al. International Congresses and Conference, 1840-1937: A Union List of Their Publications Available in Libraries of the United States and Canada. The H. W. Wilson company, 1938.