Cita APA (7th ed.)
TWINING, W., & MIERS, D. (1991). HOW TO DO THINGS WITH RULES. THIRD EDITION. WEIDENFELD AND NICOLSON.
Cita Chicago (17th ed.)
TWINING, W., i D. MIERS. HOW TO DO THINGS WITH RULES. THIRD EDITION. Londres: WEIDENFELD AND NICOLSON, 1991.
Cita MLA (9th ed.)
TWINING, W., i D. MIERS. HOW TO DO THINGS WITH RULES. THIRD EDITION. WEIDENFELD AND NICOLSON, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.