Gaya APA

Mark, H, F, K. (1972). Encyclopedia Of Chemical Technology Index to Volumes 1-22 and Supplement . United States of America: John Wiley & Sons Ltd..

Gaya MLA

Mark, Herman, F,, Kirk-Othmer. "Encyclopedia Of Chemical Technology Index to Volumes 1-22 and Supplement". United States of America: John Wiley & Sons Ltd., 1972. Text.