Gaya APA

Kirk-Othmer, . et al (1980). Sulfonation and sulfation to thorium and thorium compounds Encyclopedia ì of chemical technology volume 22 . New York: .

Gaya MLA

Kirk-Othmer, . et al. "Sulfonation and sulfation to thorium and thorium compounds Encyclopedia ì of chemical technology volume 22". New York: , 1980. Text.