MLA

Homann Erben (Firm), cartographer, publisher. America Septentrionalis a Domino d'Anville in Galliis edita nunc in Anglia : coloniis in interiorem Virginiam deductis nec non Fluvii Ohio cursu aucta notisque geographicis et historicis illustrata / sumptibus Homannianorum Heredum.. 1756. https://collections.library.yale.edu/catalog/16708270.

APA, 6th edition

Homann Erben (Firm), cartographer, publisher. (1756)[America Septentrionalis a Domino d'Anville in Galliis edita nunc in Anglia : coloniis in interiorem Virginiam deductis nec non Fluvii Ohio cursu aucta notisque geographicis et historicis illustrata / sumptibus Homannianorum Heredum.]. https://collections.library.yale.edu/catalog/16708270.