Gaya APA

Olphen,H.Van, . (1977). Clay Colloid Chemistry for Clay Technologists Geologist and Soil Scientists . New York: John Wiley and Sons.

Gaya MLA

Olphen,H.Van, . "Clay Colloid Chemistry for Clay Technologists Geologist and Soil Scientists". New York: John Wiley and Sons, 1977. Text.