Barritt, M. (1982). American-Philippine relations: A guide to the resources in the Michigan historical collections. Bentley Historical Library, University of Michigan.
Lua i Stíl Chicago (17ú heag.)Barritt, Marjorie. American-Philippine Relations: A Guide to the Resources in the Michigan Historical Collections. Ann Arbor, Mich: Bentley Historical Library, University of Michigan, 1982.
Lua MLA (9ú heag.)Barritt, Marjorie. American-Philippine Relations: A Guide to the Resources in the Michigan Historical Collections. Bentley Historical Library, University of Michigan, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.