Samuel H. Zahm, Lancaster Penna
MLA
Zahm, Samuel H. Samuel H. Zahm, Lancaster Penna. 0AD. https://collections.library.yale.edu/catalog/16788994.
APA, 6th edition
Zahm, S. H. (0 C.E.). Samuel H. Zahm, Lancaster Penna [Bookplates]. https://collections.library.yale.edu/catalog/16788994.