APA
enstrom r., . (1977). encounter program. New York: doubleday & co.
Chicago
enstrom robert, . 1977. encounter program. New York: doubleday & co.
Harvard
enstrom r., . (1977). encounter program. New York: doubleday & co.
MLA
enstrom robert, . encounter program. New York: doubleday & co. 1977.
