Sharma, R. C. (1986). Environmental education (2nd revised ed.). Metropolitan.
シカゴスタイル引用形Sharma, R. C. Environmental Education. 2nd revised ed. New Delhi: Metropolitan, 1986.
MLA引用形式Sharma, R. C. Environmental Education. 2nd revised ed. Metropolitan, 1986.
警告: この引用は必ずしも正確ではありません.