Não informado. (2004). Steam and Heating Engineer. Troup Publications.
Style de citation Chicago (17e éd.)Não informado. Steam and Heating Engineer. London: Troup Publications, 2004.
Style de citation MLA (8e éd.)Não informado. Steam and Heating Engineer. Troup Publications, 2004.
Attention : ces citations peuvent ne pas être correctes à 100%.