APA Style

Rossum, G, V. (1986). Gas quality Proceedings of the congressgas quality-specification and measurement of physical and chemical properties of natural gas", groningen, the netherlands, 22-25 April 1986" . Amsterdam: Elsevier..

MLA Style

Rossum, G.J, Van. "Gas quality Proceedings of the congressgas quality-specification and measurement of physical and chemical properties of natural gas", groningen, the netherlands, 22-25 April 1986"". Amsterdam: Elsevier., 1986. Buku.