APA-viite (7. p.)

Heron, J. (1982). Empirical validity in experimental research. Human Potential Research Project, University of Surrey : British Postgraduate Medical Federation, University of London.

Chicago-viite (17. p.)

Heron, John. Empirical Validity in Experimental Research. [Guildford, Surrey]: Human Potential Research Project, University of Surrey : British Postgraduate Medical Federation, University of London, 1982.

MLA-viite (8. p.)

Heron, John. Empirical Validity in Experimental Research. Human Potential Research Project, University of Surrey : British Postgraduate Medical Federation, University of London, 1982.