MLA

Bickford, Alfcott, and Esq. Alscott Bickford, Esq, Dunsland. 0AD. https://collections.library.yale.edu/catalog/16789124.

APA, 6th edition

Bickford, A., & E. (0 C.E.). Alscott Bickford, Esq, Dunsland [Bookplates]. https://collections.library.yale.edu/catalog/16789124.