APA (7th ed.) Citation

Clarke, H. W. (1970). Why isn't everyone using microfilm? 3M Australia Pty. Ltd..

Chicago Style (17th ed.) Citation

Clarke, H W. Why Isn't Everyone Using Microfilm? Pymble, N.S.W.: 3M Australia Pty. Ltd., 1970.

MLA (8th ed.) Citation

Clarke, H W. Why Isn't Everyone Using Microfilm? 3M Australia Pty. Ltd., 1970.