Cita APA (7th ed.)

Walliman, N. (2018). Research methods: The basics (2nd edition.). Routledge.

Cita Chicago (17th ed.)

Walliman, Nicholas. Research Methods: The Basics. 2nd edition. Abingdon, Oxon: Routledge, 2018.

Cita MLA (9th ed.)

Walliman, Nicholas. Research Methods: The Basics. 2nd edition. Routledge, 2018.