Hefferan, M. (1907). Bacteria and Mineral Salts. Zenodo.
Cita Chicago (17th ed.)Hefferan, Mary. Bacteria and Mineral Salts. Zenodo, 1907.
Cita MLA (9th ed.)Hefferan, Mary. Bacteria and Mineral Salts. Zenodo, 1907.
Atenció: Aquestes cites poden no estar 100% correctes.