Gumpert, M., & Shuman, E. L. (1936). Trail-blazers of science: Life stories of some half-forgotten pioneers of modern research. Funk & Wagnalls company.
Lua i Stíl Chicago (17ú heag.)Gumpert, Martin, agus Edwin L. Shuman. Trail-blazers of Science: Life Stories of Some Half-forgotten Pioneers of Modern Research. New York, London: Funk & Wagnalls company, 1936.
Lua MLA (8ú heag.)Gumpert, Martin, agus Edwin L. Shuman. Trail-blazers of Science: Life Stories of Some Half-forgotten Pioneers of Modern Research. Funk & Wagnalls company, 1936.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.