Gaya APA
      Punmia, B.C. ().
    Soil mechanics and fundam-tions / B.C. Punmia .
    New York:
  McGraw Hill.
  
Gaya Chicago
      Punmia, B.C.
    Soil mechanics and fundam-tions / B.C. Punmia.
    
    New York:
  McGraw Hill,
  .
  .
  
Gaya MLA
      Punmia, B.C.
    Soil mechanics and fundam-tions / B.C. Punmia.
    
    New York:
  McGraw Hill,
  .
  .
  
Gaya Turabian
      Punmia, B.C.
    Soil mechanics and fundam-tions / B.C. Punmia.
     
    New York:
  McGraw Hill,
  .
  .