APA (7th ed.) Citation

Purwana, Y., Chegenizadeh, A., & Nikraz, H. (2013). Suction-monitored direct shear apparatus: A simple device for unsaturated soil testing.

Chicago Style (17th ed.) Citation

Purwana, Y., Amin Chegenizadeh, and H. Nikraz. Suction-monitored Direct Shear Apparatus: A Simple Device for Unsaturated Soil Testing. 2013.

MLA (9th ed.) Citation

Purwana, Y., et al. Suction-monitored Direct Shear Apparatus: A Simple Device for Unsaturated Soil Testing. 2013.