Gaya APA

Khan, I., Nather, . (1990). Preliminary assessment of the water quality and polution threat at the Ulu Lepar wetland system. Pub. no. 60 . : AWB - Malaysia.

Gaya MLA

Khan, I.S.A.N., Nather, . "Preliminary assessment of the water quality and polution threat at the Ulu Lepar wetland system. Pub. no. 60". : AWB - Malaysia, 1990. Text.