Gaya APA
Crandall, R., Hojat, M. (1989).
Loneliness : theory, research, and applications .
California:
Sage Publications Inc..
Gaya MLA
Crandall, Rick., Hojat, Mohammadreza.
"Loneliness : theory, research, and applications".
California:
Sage Publications Inc.,
1989.
Text.