MLA

Wittgenstein, Ludwig, Henriët Plantenga, and Hubertus G Hubbeling. Colleges Over Ethiek, Esthetica, Psychologie En Religieus Geloof. Meppel: Boom, 1979.

APA

Wittgenstein, L., Plantenga, H., & Hubbeling, H. G. (1979). Colleges over ethiek, esthetica, psychologie en religieus geloof. Meppel: Boom.

Chicago

Wittgenstein, Ludwig, and Hubertus G Hubbeling. Colleges Over Ethiek, Esthetica, Psychologie En Religieus Geloof. Translated by Henriët Plantenga. Meppel: Boom, 1979.