Conference paper: unpublished [from Print source using APA 5th ed.]
Author, date and title information can be given, but publication details obviously cannot be given.
Author, Initials. (year, Month). Title of paper. Paper presented at the meeting of [details of meeting, not including date].
Johnson, R. S., Dean, J. E., & Childers, S. K. (1998, September). The role of exercise in the treatment of insomnia. Paper presented at the meeting of the Association of Sport and Exercise Sciences.
Ryan, R. M., & Openshaw, L. (2003, January). Flavour enhancement and public perceptions of health risks. Paper presented at the meeting of the Institute of Food Science and Technology.
Citation in Text
Taking exercise before shortly before attempting to sleep (Johnson, Dean, & Childers, 1998) has the effect ...
... alarms about E numbers in the popular press are described by Ryan and Openshaw (2003) as having no consistent foundation.