APA (7th ed.) Citation

International Labour Office, Waelbroeck, P., & Mayer, E. H. (1941). Labour supply and national defence. [publisher not identified].

Chicago Style (17th ed.) Citation

International Labour Office, Pierre Waelbroeck, and Elizabeth Harvey Mayer. Labour Supply and National Defence. Montreal: [publisher not identified], 1941.

MLA (9th ed.) Citation

International Labour Office, et al. Labour Supply and National Defence. [publisher not identified], 1941.