North Sea Task Force. (1993). North sea quality status report 1993. Olsen and Olsen.
Chicagoスタイル(17版)引用形式North Sea Task Force. North Sea Quality Status Report 1993. Fredensborg: Olsen and Olsen, 1993.
MLA(9版)引用形式North Sea Task Force. North Sea Quality Status Report 1993. Olsen and Olsen, 1993.
警告: この引用は必ずしも正確ではありません.