Lofton, R. E., & Merritt, M. F. (1921). Method for differentiating and estimating unbleached sulphite and sulphate pulps in paper. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationLofton, R. E., and Muriel Fleming Merritt. Method for Differentiating and Estimating Unbleached Sulphite and Sulphate Pulps in Paper. [Washington?]: U.S. Government Printing Office, 1921.
MLA (9th ed.) CitationLofton, R. E., and Muriel Fleming Merritt. Method for Differentiating and Estimating Unbleached Sulphite and Sulphate Pulps in Paper. U.S. Government Printing Office, 1921.
Warning: These citations may not always be 100% accurate.