APA-referens (7:e uppl.)

Kassen, M. (2019). Methodology of Research and Key Sources of Empirical Data. Open Data Politics : A Case Study on Estonia and Kazakhstan, 19. https://doi.org/10.1007/978-3-030-11410-7_2

Chicago-referens (17:e uppl.)

Kassen, Maxat. "Methodology of Research and Key Sources of Empirical Data." Open Data Politics : A Case Study on Estonia and Kazakhstan 2019: 19. https://doi.org/10.1007/978-3-030-11410-7_2.

MLA-referens (9:e uppl.)

Kassen, Maxat. "Methodology of Research and Key Sources of Empirical Data." Open Data Politics : A Case Study on Estonia and Kazakhstan, 2019, p. 19, https://doi.org/10.1007/978-3-030-11410-7_2.