APA Style

Labov, William. (1975). What is a linguistic fact ? . s.l.: The Peter De Ridder Press.

Chicago Style

Labov, William. What is a linguistic fact ?. s.l.: The Peter De Ridder Press, 1975. Text.

MLA Style

Labov, William. What is a linguistic fact ?. s.l.: The Peter De Ridder Press, 1975. Text.

Turabian Style

Labov, William. What is a linguistic fact ?. s.l.: The Peter De Ridder Press, 1975. Print.