Cita APA (7a ed.)

Association of Official Analytical Chemists. (1990). Changes in official methods of analysis. Association of Official Analytical Chemists.

Cita Chicago Style (17a ed.)

Association of Official Analytical Chemists. Changes in Official Methods of Analysis. Arlington: Association of Official Analytical Chemists, 1990.

Cita MLA (9a ed.)

Association of Official Analytical Chemists. Changes in Official Methods of Analysis. Association of Official Analytical Chemists, 1990.