Damann, K. E. (2019). Drinking water or sewage. Obafemi Awolowo University Press Limited.
芝加哥风格引文Damann, Kenneth E. Drinking Water or Sewage. Obafemi Awolowo University Press Limited, 2019.
MLA引文Damann, Kenneth E. Drinking Water or Sewage. Obafemi Awolowo University Press Limited, 2019.
警告：这些引文格式不一定是100％准确.