Citazione Stile APA (7a Edizione)

(2005). Geode earth: Accompanying CD to Earth : an introduction to physical geology. Pearson.

Citazione stile Chigago Style (17a edizione)

Geode Earth: Accompanying CD to Earth : An Introduction to Physical Geology. Upper Saddle, N. J: Pearson, 2005.

Citatione MLA (9a ed.)

Geode Earth: Accompanying CD to Earth : An Introduction to Physical Geology. Pearson, 2005.