Não informado. (2004). Steam and Heating Engineer. Troup Publications.
Chicagoスタイル(17版)引用形式Não informado. Steam and Heating Engineer. London: Troup Publications, 2004.
MLA(8版)引用形式Não informado. Steam and Heating Engineer. Troup Publications, 2004.
警告: この引用は必ずしも正確ではありません.