MLA

Indenture between Sir John Fastolf and Richard Sellyng. 1433. https://collections.library.yale.edu/catalog/16371293.

APA, 6th edition

Indenture between Sir John Fastolf and Richard Sellyng. (1433). [Early works to 1800, Indentures England 15th century, Legal documents England 15th century, Manuscripts, Medieval England 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/16371293.