APA استشهاد

Ouseph, P. P. (1992). Distribution of some selected toxic metals in the Cochin harbour region. Centre for Earth Science Studies.

استشهاد بنمط شيكاغو

Ouseph, P. P. Distribution of Some Selected Toxic Metals in the Cochin Harbour Region. Thiruvananthapuram: Centre for Earth Science Studies, 1992.

MLA استشهاد

Ouseph, P. P. Distribution of Some Selected Toxic Metals in the Cochin Harbour Region. Centre for Earth Science Studies, 1992.