MLA

Seutter, Matthaeus, 1678-1756. Synopsis Circuli Rhenani Inferioris sive Electorum Rheni : exhibens Archi Episcopatum Moguntinum, Coloniensem, Trevirensem et Palatinatum Rheni, comitatus Beilstein, Newenaer, Isenburg Infer. et Reifferscheid. / ob oculos posita à Matth. Seutter, Sac. Cae. [approximately 1740]. https://collections.library.yale.edu/catalog/16670967.

APA, 6th edition

Seutter, Matthaeus, 1678-1756. ([approximately 1740])[Synopsis Circuli Rhenani Inferioris sive Electorum Rheni : exhibens Archi Episcopatum Moguntinum, Coloniensem, Trevirensem et Palatinatum Rheni, comitatus Beilstein, Newenaer, Isenburg Infer. et Reifferscheid. / ob oculos posita à Matth. Seutter, Sac. Cae]. https://collections.library.yale.edu/catalog/16670967.