Tohutoro APA (7th ed.)
Leffmann, H. (1926). Bulletin of the Wagner Free Institute of Science of Philadelphia. Wagner Free Institute of Science.
Tohutoru Kātū Chicago (17th ed.)
Leffmann, Henry. Bulletin of the Wagner Free Institute of Science of Philadelphia. Philadelphia: Wagner Free Institute of Science, 1926.
Tohutoro MLA (9th ed.)
Leffmann, Henry. Bulletin of the Wagner Free Institute of Science of Philadelphia. Wagner Free Institute of Science, 1926.
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