Cite

Cardi-all brand Electrocardiograph Machine

MLA

Beck-Lee Corporation, Stern, Harold, MD. Cardi-all brand Electrocardiograph Machine. Box 057. 1930-1950. https://collections.library.yale.edu/catalog/17316570.

APA, 6th edition

Beck-Lee Corporation, & Stern, Harold, MD. (["Box 057"])(1930-1950)[Cardi-all brand Electrocardiograph Machine]. https://collections.library.yale.edu/catalog/17316570.