Dyfyniad APA

Tissot, B. P., & Welte, D. H. (1984). Petroleum fromation and occurrence. Springer.

Dyfyniad Arddull Chicago

Tissot, B P., and D H. Welte. Petroleum Fromation and Occurrence. Berlin: Springer, 1984.

Dyfyniad MLA

Tissot, B P., and D H. Welte. Petroleum Fromation and Occurrence. Springer, 1984.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.