Cite

[Holophotal System of Illuminatng Lighthouses] (7327-7328)

MLA

Beinecke, Edwin J. (Edwin John), 1886-1970. [Holophotal System of Illuminatng Lighthouses] (7327-7328). Box 56, folder 1202-1203. undated. https://collections.library.yale.edu/catalog/16609923.

APA, 6th edition

Beinecke, Edwin J. (Edwin John), 1886-1970. (["Box 56, folder 1202-1203"])(undated)[[Holophotal System of Illuminatng Lighthouses] (7327-7328)]. https://collections.library.yale.edu/catalog/16609923.