Gaya APA
      Bull, W, B., Poland, J, F. (1975).
    Land Subsidence Due to Ground-Water Withdrawal In The Los Banos-Kettleman City Area, California .
    Bandung:
  Direktorat Sumber Daya Mineral.
  
Gaya MLA
      Bull, William, B.., Poland, Joseph, F..
    "Land Subsidence Due to Ground-Water Withdrawal In The Los Banos-Kettleman City Area, California".
    
    Bandung:
  Direktorat Sumber Daya Mineral,
  1975.
  Umum.