Hellevik, O. (1988). Introduction to causal analysis: Exploring survey data by crosstabulation (2nd ed.). Norwegian University Press Distributed by Oxford University Press.
Chicagoスタイル(17版)引用形式Hellevik, Ottar. Introduction to Causal Analysis: Exploring Survey Data by Crosstabulation. 2nd ed. Oslo, Oxford, New York: Norwegian University Press Distributed by Oxford University Press, 1988.
MLA(9版)引用形式Hellevik, Ottar. Introduction to Causal Analysis: Exploring Survey Data by Crosstabulation. 2nd ed. Norwegian University Press Distributed by Oxford University Press, 1988.
警告: この引用は必ずしも正確ではありません.