Dyfyniad APA

Killops , S., & Killops , V. (2005). Introduction to organic geochemistry (2nd ed.). Black well publishing company.

Dyfyniad Arddull Chicago

Killops , Stephen, and Vanessa Killops. Introduction to Organic Geochemistry. 2nd ed. USA: Black well publishing company, 2005.

Dyfyniad MLA

Killops , Stephen, and Vanessa Killops. Introduction to Organic Geochemistry. 2nd ed. Black well publishing company, 2005.

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