Weidlich, W., & Haag, G. Concepts and Models of a Quantitative Sociology: The Dynamics of Interacting Populations. Springer International Publishing.
Chicago-viite (17. p.)Weidlich, Wolfgang, ja Günter Haag. Concepts and Models of a Quantitative Sociology: The Dynamics of Interacting Populations. Cham: Springer International Publishing.
MLA-viite (8. p.)Weidlich, Wolfgang, ja Günter Haag. Concepts and Models of a Quantitative Sociology: The Dynamics of Interacting Populations. Springer International Publishing.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.