Agassiz, L. (1863). Methods of study in natural history. Ticknor and Fields.
Lua i Stíl Chicago (17ú heag.)Agassiz, Louis. Methods of Study in Natural History. Boston: Ticknor and Fields, 1863.
Lua MLA (8ú heag.)Agassiz, Louis. Methods of Study in Natural History. Ticknor and Fields, 1863.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.