APA (7th ed.) Citation

Rowatt, R. W. (1980). O.H.P: A guide to the use of the overhead projector. Scottish Council for Educational Technology.

Chicago Style (17th ed.) Citation

Rowatt, Robert Watson. O.H.P: A Guide to the Use of the Overhead Projector. Glasgow: Scottish Council for Educational Technology, 1980.

MLA (9th ed.) Citation

Rowatt, Robert Watson. O.H.P: A Guide to the Use of the Overhead Projector. Scottish Council for Educational Technology, 1980.