Yalçin, M. N. Et Al. 2002. Carboniferous coals of the Zonguldak basin (northwest Turkey): Implications for coalbed methane potential. AAPG Bulletin , vol.86, no.7 , 1305-1328.

Yalçin, M. N., Inan, S., Gürdal, G., Mann, U., & Schaefer, R. G., (2002). Carboniferous coals of the Zonguldak basin (northwest Turkey): Implications for coalbed methane potential. AAPG Bulletin , vol.86, no.7, 1305-1328.

Yalçin, M. Et Al. "Carboniferous coals of the Zonguldak basin (northwest Turkey): Implications for coalbed methane potential," AAPG Bulletin , vol.86, no.7, 1305-1328, 2002

Yalçin, M. N. Et Al. "Carboniferous coals of the Zonguldak basin (northwest Turkey): Implications for coalbed methane potential." AAPG Bulletin , vol.86, no.7, pp.1305-1328, 2002

Yalçin, M. N. Et Al. (2002) . "Carboniferous coals of the Zonguldak basin (northwest Turkey): Implications for coalbed methane potential." AAPG Bulletin , vol.86, no.7, pp.1305-1328.

@article{article, author={M. Namik Yalçin Et Al. }, title={Carboniferous coals of the Zonguldak basin (northwest Turkey): Implications for coalbed methane potential}, journal={AAPG Bulletin}, year=2002, pages={1305-1328} }