The history of some Pre-Cambrian rocks in America and Europe

MLA

Hunt, Thomas Sterry and Edgar Fahs Smith Memorial Collection (University of Pennsylvania). The history of some Pre-Cambrian rocks in America and Europe. [Place of publication not identified] : [publisher not identified], [1880?]

APA

Hunt, T. & Edgar Fahs Smith Memorial Collection (University of Pennsylvania). (1880). The history of some Pre-Cambrian rocks in America and Europe. [Place of publication not identified] : [publisher not identified].

Chicago

Hunt, Thomas Sterry and Edgar Fahs Smith Memorial Collection (University of Pennsylvania). The history of some Pre-Cambrian rocks in America and Europe. [Place of publication not identified] : [publisher not identified], [1880?]