APA (7th ed.) Citation

Tessens, E., & Zauyah, S. (1982). Positive permanent charge in oxisols. Wiley.

Chicago Style (17th ed.) Citation

Tessens, E., and Siti Zauyah. Positive Permanent Charge in Oxisols. Wiley, 1982.

MLA (9th ed.) Citation

Tessens, E., and Siti Zauyah. Positive Permanent Charge in Oxisols. Wiley, 1982.

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