Cita APA (7a ed.)

Van der Vlist, E. (2004). RELAX NG (First edition.). O'Reilly.

Cita Chicago Style (17a ed.)

Van der Vlist, Eric. RELAX NG. First edition. Beijing: O'Reilly, 2004.

Cita MLA (9a ed.)

Van der Vlist, Eric. RELAX NG. First edition. O'Reilly, 2004.