Selections from the letters of Richard D. Arnold

MLA

Arnold, Richard D. and Edgar Fahs Smith Memorial Collection (University of Pennsylvania). Selections from the letters of Richard D. Arnold. [Place of publication not identified] : [publisher not identified], 1928.

APA

Arnold, R. & Edgar Fahs Smith Memorial Collection (University of Pennsylvania). (1928). Selections from the letters of Richard D. Arnold. [Place of publication not identified] : [publisher not identified].

Chicago

Arnold, Richard D. and Edgar Fahs Smith Memorial Collection (University of Pennsylvania). Selections from the letters of Richard D. Arnold. [Place of publication not identified] : [publisher not identified], 1928.