APA

Long D., Wenban-Smith G., Geoff M., Wenban-Smith G. & Geoff M. (2003). Gas trading manual. Cambridge: Woodhead Publishing.

Chicago

Long David, Wenban-Smith Gay, Geoff Moore, Wenban-Smith Gay and Geoff Moore. 2003. Gas trading manual. Cambridge: Woodhead Publishing.

Harvard

Long D., Wenban-Smith G., Geoff M., Wenban-Smith G. and Geoff M. (2003). Gas trading manual. Cambridge: Woodhead Publishing.

MLA

Long David, Wenban-Smith Gay, Geoff Moore, Wenban-Smith Gay and Geoff Moore. Gas trading manual. Cambridge: Woodhead Publishing. 2003.