Tohutoro APA (7th ed.)
Visser, E. (1964). Universitas Groningana 1914-1964: T. 1-2. Wolters.
Tohutoru Kātū Chicago (17th ed.)
Visser, Elisabeth. Universitas Groningana 1914-1964: T. 1-2. Groningen: Wolters, 1964.
Tohutoro MLA (9th ed.)
Visser, Elisabeth. Universitas Groningana 1914-1964: T. 1-2. Wolters, 1964.
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