APA Style

Geoffrey Leech, Paul Rayson and Andrew Wilson. (2001). Word Frequencies in Written and Spoken English based on the British National Corpus (Cet. 1). London: Routledge.

Chicago Style

Geoffrey Leech, Paul Rayson and Andrew Wilson. Word Frequencies in Written and Spoken English based on the British National Corpus. Cet. 1 London: Routledge, 2001. Text.

MLA Style

Geoffrey Leech, Paul Rayson and Andrew Wilson. Word Frequencies in Written and Spoken English based on the British National Corpus. Cet. 1 London: Routledge, 2001. Text.

Turabian Style

Geoffrey Leech, Paul Rayson and Andrew Wilson. Word Frequencies in Written and Spoken English based on the British National Corpus. Cet. 1 London: Routledge, 2001. Print.