Gaya APA
Furman, N, H. (1917).
Standard Methods of Chemical Analysis, Volume II, 6th ed. .
United States of America:
D. Van Nostrand Company, Inc.
Gaya MLA
Furman, N., Howell.
"Standard Methods of Chemical Analysis, Volume II, 6th ed.".
United States of America:
D. Van Nostrand Company, Inc,
1917.
Text.