Lua APA (7ú heag.)

Brace, I. &. B. (2022). Questionnaire Design (5th.). Kogan Page.

Lua i Stíl Chicago (17ú heag.)

Brace, Ian & Bolton. Questionnaire Design. 5th. London: Kogan Page, 2022.

Lua MLA (9ú heag.)

Brace, Ian & Bolton. Questionnaire Design. 5th. Kogan Page, 2022.

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