APA (7th ed.) Citation

American Society for Testing and Materials. (2007). Standard test method for pH of soils. ASTM.

Chicago Style (17th ed.) Citation

American Society for Testing and Materials. Standard Test Method for PH of Soils. Philadelphia: ASTM, 2007.

MLA (9th ed.) Citation

American Society for Testing and Materials. Standard Test Method for PH of Soils. ASTM, 2007.

Warning: These citations may not always be 100% accurate.