Gaya APA
Kirk, R, E., Donald, F, O. (1951).
encyclopedia of chemical technology [vol.7] (vol.7).
New York:
The Interscience Encyclopedia, Inc.
Gaya MLA
Kirk, Raymond, E., Donald, F., Othmer,.
"encyclopedia of chemical technology [vol.7]".
vol.7
New York:
The Interscience Encyclopedia, Inc,
1951.
Text.