Citazione Stile APA (7a Edizione)

HOLMES, A. Principles of physical geology chapter XX-XXI(619-1288).-- 2nd ed. ELBS and Nelson.

Citazione stile Chigago Style (17a edizione)

HOLMES, Arthur. Principles of Physical Geology Chapter XX-XXI(619-1288).-- 2nd Ed. London: ELBS and Nelson.

Citatione MLA (9a ed.)

HOLMES, Arthur. Principles of Physical Geology Chapter XX-XXI(619-1288).-- 2nd Ed. ELBS and Nelson.