Gaya APA

Willard, H, H., (a.o), M, J, L, L. (1948). Instrumental Methods of Analysis, 4th-Ed . New Jersey: D. Van Nostrand Company, Inc.

Gaya MLA

Willard, Hobart, H., (a.o), Merritt, Jr,, Lynne, L. "Instrumental Methods of Analysis, 4th-Ed". New Jersey: D. Van Nostrand Company, Inc, 1948. Text.