APA Style
Levine, S, N. (1973).
Socio-Economic planning sciences: An International juornal (Vol. 7,--No. 2).
New York:
Pergamon press.
MLA Style
Levine, Sumner, N..
"Socio-Economic planning sciences: An International juornal".
Vol. 7,--No. 2
New York:
Pergamon press,
1973.
Text.