Παραπομπή APA

Johannsen,Albert. (1939). A descriptive petrography of the Igneous rocks,Vol.1Introduction,Textures,Classsifications and Glos. Allied.

Παραπομπή Chicago Style

Johannsen,Albert. A Descriptive Petrography of the Igneous Rocks,Vol.1Introduction,Textures,Classsifications and Glos. Bombay: Allied, 1939.

Παραπομπή MLA

Johannsen,Albert. A Descriptive Petrography of the Igneous Rocks,Vol.1Introduction,Textures,Classsifications and Glos. Allied, 1939.