APA (7th ed.) Citation

SpringerLink (Online service) & Gregory, W. (1939). Second catalogue of publications of international congresses and conferences. Springer Science + Business Media.

Chicago Style (17th ed.) Citation

SpringerLink (Online service) and Winifred Gregory. Second Catalogue of Publications of International Congresses and Conferences. Dordrecht: Springer Science + Business Media, 1939.

MLA (9th ed.) Citation

SpringerLink (Online service) and Winifred Gregory. Second Catalogue of Publications of International Congresses and Conferences. Springer Science + Business Media, 1939.