Gaya APA

YONG, R, N., MULLIGAN, C, N. (2004). Natural attenuation of contaminants in soil . Boca Raton: Lewis.

Gaya MLA

YONG, Raymond, N.., MULLIGAN, Catherine, N.. "Natural attenuation of contaminants in soil". Boca Raton: Lewis, 2004. Buku.