APA-ийн эшлэл(7 дахь хэвлэлт)

Wittgenstein, L. (1958). Preliminary studies for the "philosophical investigations": The blue and brown books. Harper.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Wittgenstein, Ludwig. Preliminary Studies for the "Philosophical Investigations": The Blue and Brown Books. New York: Harper, 1958.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Wittgenstein, Ludwig. Preliminary Studies for the "Philosophical Investigations": The Blue and Brown Books. Harper, 1958.