MLA

Bos, Gijsbertha F. Categories and Border-line Categories : a Synchronic Study In General Linguistics. Amsterdam: Hakkert, 1967.

APA

Bos, G. F. (1967). Categories and border-line categories : a synchronic study in general linguistics. Amsterdam: Hakkert.

Chicago

Bos, Gijsbertha F. Categories and Border-Line Categories: A Synchronic Study In General Linguistics. Amsterdam: Hakkert, 1967.