APA-Zitierstil (7. Ausg.)

(1975). Geologic map of the Yarumal quadrangle (H-8) and part of the Ituango quadrangle (H-7), Colombia. U.S. Geological Survey.

Chicago-Zitierstil (17. Ausg.)

Geologic Map of the Yarumal Quadrangle (H-8) and Part of the Ituango Quadrangle (H-7), Colombia. Reston, Va: U.S. Geological Survey, 1975.

MLA-Zitierstil (9. Ausg.)

Geologic Map of the Yarumal Quadrangle (H-8) and Part of the Ituango Quadrangle (H-7), Colombia. U.S. Geological Survey, 1975.