APA-referens (7:e uppl.)

Punmia B.C. (2019). Soil Mechanics and Foundations (17th.). Chennai.

Chicago-referens (17:e uppl.)

Punmia B.C. Soil Mechanics and Foundations. 17th. Laxmi Publication: Chennai, 2019.

MLA-referens (9:e uppl.)

Punmia B.C. Soil Mechanics and Foundations. 17th. Chennai, 2019.