Stets, Jan E.
New directions in identity theory and research
Oxford University Press, 2016
 eBooks
Diet, Nutrition and cancer : directions for research
National Academy Press, 1982
 Buku Teks
Research directions in distributed parameter systems
edited by Ralph C. Smith, Michael A. Demetriou
Society for Industrial and Applied Mathematics, 2003
 eBooks
Research directions in computer science: an MIT perspective
edited by Albert R. Meyer
MIT Press, 1991
 Buku Teks
Urban policy analysis: directions for future research
edited by Terry Nichols Clark
Sage, 1983
 Buku Teks