[Concert contract between Ernestine Schumann-Heink and Edward J. McNamara]
MLA
[Concert Contract between Ernestine Schumann-Heink and Edward J. McNamara]. 1914. https://collections.library.yale.edu/catalog/10259936.
APA, 6th edition
[Concert contract between Ernestine Schumann-Heink and Edward J. McNamara]. (1914). [Business records, Legal documents]. https://collections.library.yale.edu/catalog/10259936.