"Paper presented as a contribution to the Western Psychological Association Meeting Symposium, 'Acquaintance Rape and Adolescent Sexuality,' in San Diego, California, April 1979." [NCJRS, Eric]
I'll also try and go through some of the books listed in the Google Book search to see if the table was reproduced there.
Opinion: Some academics will often present their data at a conference of their peers in order to get feedback before they send their article out to journals to be peer reviewed (basically to work out all the kinks). So, it is quite possible that this research was presented at a conference and later published as a paper, or to have had part of the data appear across many of their publications.
Thanks to: Will, Greg, Morgan, HJ, and anyone else I missed. If first name is too revealing, message me and I'll remove it.