Evans, A. (1998). Portable laboratory tests the water. London : London Press Service.
Cita Chicago (17th ed.)Evans, Albert. Portable Laboratory Tests the Water. London : London Press Service, 1998.
Cita MLA (9th ed.)Evans, Albert. Portable Laboratory Tests the Water. London : London Press Service, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.