Cita APA (7a ed.)

American Society for Testing and Materials. (2012). Standard test methods for Ph of water. ASTM.

Cita Chicago Style (17a ed.)

American Society for Testing and Materials. Standard Test Methods for Ph of Water. Philadelphia: ASTM, 2012.

Cita MLA (9a ed.)

American Society for Testing and Materials. Standard Test Methods for Ph of Water. ASTM, 2012.