APA (7th ed.) Citation

Purkis, J. (1999). A preface to Wilfred Owen / John Purkis. Longman.

Chicago Style (17th ed.) Citation

Purkis, John. A Preface to Wilfred Owen / John Purkis. London: Longman, 1999.

MLA (9th ed.) Citation

Purkis, John. A Preface to Wilfred Owen / John Purkis. Longman, 1999.

Warning: These citations may not always be 100% accurate.