Gaya APA
Hennings, K., Samuels, W, J. (1990).
Neoclassical Economic Theory 1870-1930 .
Massachusetts:
Kluwer Academic Publisher.
Gaya MLA
Hennings, Klaus., Samuels, Warren, J..
"Neoclassical Economic Theory 1870-1930".
Massachusetts:
Kluwer Academic Publisher,
1990.
Text.