MLA

Society of California Pioneers of New England, creator. Society of California Pioneers of New England : This Is to Certify That [Blank] and That He Is an Honored Member of This Society. Society of California Pioneers of New England, 0AD. https://collections.library.yale.edu/catalog/2016589.

APA, 6th edition

Society of California Pioneers of New England, creator. (0 C.E.). Society of California Pioneers of New England : this is to certify that [blank] and that he is an honored member of this society [Forms, Pictorial works, Blank forms, Lithographs]. Society of California Pioneers of New England. https://collections.library.yale.edu/catalog/2016589.