(1994). Environment encyclopedia and directory. Europa Pub.
Chicagoスタイル(17版)引用形式Environment Encyclopedia and Directory. London: Europa Pub, 1994.
MLA(9版)引用形式Environment Encyclopedia and Directory. Europa Pub, 1994.
警告: この引用は必ずしも正確ではありません.
(1994). Environment encyclopedia and directory. Europa Pub.
Chicagoスタイル(17版)引用形式Environment Encyclopedia and Directory. London: Europa Pub, 1994.
MLA(9版)引用形式Environment Encyclopedia and Directory. Europa Pub, 1994.