APA-ийн эшлэл(7 дахь хэвлэлт)

Nwigwe, K. U. (2015). Comparative Petrophysical Study of Reservoir Sandstones in the "U", "K" And "N" Fields, South-East of the Niger Delta.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Nwigwe, Kingsley Uzochukwu. Comparative Petrophysical Study of Reservoir Sandstones in the "U", "K" And "N" Fields, South-East of the Niger Delta. 2015.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Nwigwe, Kingsley Uzochukwu. Comparative Petrophysical Study of Reservoir Sandstones in the "U", "K" And "N" Fields, South-East of the Niger Delta. 2015.