APA-čujuhus (7. p.)

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

Chicago-čujuhus (17. p.)

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

MLA-čujuhus (9. p.)

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

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.