APA
Howel Williams, Francis J Turner &, . (1969). Petrography: An Introduction to the Study of Rocks in Thin Sections. Bombay: Vakils, Feffer and Simons Pvt.Ltd.
Chicago
Howel Williams, Francis J Turner &, . 1969. Petrography: An Introduction to the Study of Rocks in Thin Sections. Bombay: Vakils, Feffer and Simons Pvt.Ltd.
Harvard
Howel Williams, Francis J Turner &, . (1969). Petrography: An Introduction to the Study of Rocks in Thin Sections. Bombay: Vakils, Feffer and Simons Pvt.Ltd.
MLA
Howel Williams, Francis J Turner &, . Petrography: An Introduction to the Study of Rocks in Thin Sections. Bombay: Vakils, Feffer and Simons Pvt.Ltd. 1969.