I R Calder. (1998). Water - resource and land-use issues. Srilanka: IWMI(International Water Management Institute).
シカゴスタイル引用形I R Calder. Water - Resource and Land-use Issues. Srilanka: IWMI(International Water Management Institute), 1998.
MLA引用形式I R Calder. Water - Resource and Land-use Issues. Srilanka: IWMI(International Water Management Institute), 1998.
警告: この引用は必ずしも正確ではありません.