APA
Armitage J G, Fifteeth sottish universitys summer school an heliu l. (. . S. & Farouhar J E. (1975). Proceedings of helium liquids. London: Academic Press.
Chicago
Armitage J G, Fifteeth sottish universitys summer school an heliu liquids (1974 Scotland) and Farouhar J E. 1975. Proceedings of helium liquids. London: Academic Press.
Harvard
Armitage J G, Fifteeth sottish universitys summer school an heliu l. (. . S. and Farouhar J E. (1975). Proceedings of helium liquids. London: Academic Press.
MLA
Armitage J G, Fifteeth sottish universitys summer school an heliu liquids (1974 Scotland) and Farouhar J E. Proceedings of helium liquids. London: Academic Press. 1975.
