Cita APA (7a ed.)
Penfield, S., & Pirsson, L. Contributions to Mineralogy and Petrography from the Laboratories of the Sheffield Scientific School of Yale University. Charles Scribner's Sons.
Cita estilo Chicago (17a ed.)
Penfield, S.L, y L.V Pirsson. Contributions to Mineralogy and Petrography from the Laboratories of the Sheffield Scientific School of Yale University. Nueva York, EUA: Charles Scribner's Sons.
Cita MLA (9a ed.)
Penfield, S.L, y L.V Pirsson. Contributions to Mineralogy and Petrography from the Laboratories of the Sheffield Scientific School of Yale University. Charles Scribner's Sons.
Precaución: Estas citas no son 100% exactas.