Cita APA (7a ed.)

Powell, M. J. (1979). Modern maths: Test yourself. Celtic Revision Aids.

Cita Chicago Style (17a ed.)

Powell, M. J. Modern Maths: Test Yourself. Middlesex: Celtic Revision Aids, 1979.

Cita MLA (8a ed.)

Powell, M. J. Modern Maths: Test Yourself. Celtic Revision Aids, 1979.