Poag, C., Watts, A., Cousin, M., Goldberg, D., Hart, D., Miller, K., . . . Wilkins, R. (1987). SITE-612. US Govt. Printing Office; UK distributors, IPOD Committee, NERC, Swindon.
Cita Chicago (17th ed.)Poag, C., et al. SITE-612. US Govt. Printing Office; UK distributors, IPOD Committee, NERC, Swindon, 1987.
Cita MLA (9th ed.)Poag, C., et al. SITE-612. US Govt. Printing Office; UK distributors, IPOD Committee, NERC, Swindon, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.