Ahnlund, N., & Roberts, M. (1940). Gustave Adolf, the great. Princeton university press; American-Scandinavian foundation.
Chicago Style (17th ed.) CitationAhnlund, Nils, and Michael Roberts. Gustave Adolf, the Great. Princeton : New York: Princeton university press; American-Scandinavian foundation, 1940.
MLA (9th ed.) CitationAhnlund, Nils, and Michael Roberts. Gustave Adolf, the Great. Princeton university press; American-Scandinavian foundation, 1940.
Warning: These citations may not always be 100% accurate.