APA (7th ed.) Citation

ScienceDirect (Online service), Moore, G., Long, D., & Wenban-Smith, G. (2003). GTM: Gas trading manual. Woodhead Pub..

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Geoff Moore, David Long, and Gay Wenban-Smith. GTM: Gas Trading Manual. Cambridge, England: Woodhead Pub., 2003.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. GTM: Gas Trading Manual. Woodhead Pub., 2003.