APA

Errera S., Brown S. L. & Brown S. L. (2002). Fundamentals of trading energy futures and options. Tulsa, Oklahoma: PennWell.

Chicago

Errera Steven, Brown Stewart L and Brown Stewart L. 2002. Fundamentals of trading energy futures and options. Tulsa, Oklahoma: PennWell.

Harvard

Errera S., Brown S. L. and Brown S. L. (2002). Fundamentals of trading energy futures and options. Tulsa, Oklahoma: PennWell.

MLA

Errera Steven, Brown Stewart L and Brown Stewart L. Fundamentals of trading energy futures and options. Tulsa, Oklahoma: PennWell. 2002.