APA (7th ed.) Citation

Hellevik, O. (1988). Introduction to causal analysis: Exploring survey data by crosstabulation (2nd ed.). Norwegian University Press.

Chicago Style (17th ed.) Citation

Hellevik, Ottar. Introduction to Causal Analysis: Exploring Survey Data by Crosstabulation. 2nd ed. Oslo: Norwegian University Press, 1988.

MLA (9th ed.) Citation

Hellevik, Ottar. Introduction to Causal Analysis: Exploring Survey Data by Crosstabulation. 2nd ed. Norwegian University Press, 1988.