APA (7th ed.) Citation

Trask, R. L. (1997). The Penguin guide to punctuation. Penguin.

Chicago Style (17th ed.) Citation

Trask, R. L. The Penguin Guide to Punctuation. London: Penguin, 1997.

MLA (9th ed.) Citation

Trask, R. L. The Penguin Guide to Punctuation. Penguin, 1997.

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