Cite

E. Torday. “Native African telegraphy: Signalling by drums and gongs.” No source, no date. [3843-1]

MLA

E. Torday. “Native African Telegraphy: Signalling by Drums and Gongs.” No Source, No Date. [3843-1]. 0AD. https://collections.library.yale.edu/catalog/10654792.

APA, 6th edition

E. Torday. “Native African telegraphy: Signalling by drums and gongs.” No source, no date. [3843-1]. (0 C.E.). [Scrapbooks]. https://collections.library.yale.edu/catalog/10654792.