APA

Jacobson H. S., Murillo C., Ruiz L., Tapia O., Zapata H., Alarcon H., Delgadillo E., Velasco C. & United States Geological Survey. (1969). Geology and mineral deposits of the San Cristóbal district, Villa Martin Province, Potosi, Bolivia. Washington: United States Government Printing Office.

Chicago

Jacobson Herbert S, Murillo Carlos, Ruiz Lorgio, Tapia Oscar, Zapata Hugo, Alarcon Hugo, Delgadillo Edgar, Velasco Carlos and United States Geological Survey. 1969. Geology and mineral deposits of the San Cristóbal district, Villa Martin Province, Potosi, Bolivia. Washington: United States Government Printing Office.

Harvard

Jacobson H. S., Murillo C., Ruiz L., Tapia O., Zapata H., Alarcon H., Delgadillo E., Velasco C. and United States Geological Survey. (1969). Geology and mineral deposits of the San Cristóbal district, Villa Martin Province, Potosi, Bolivia. Washington: United States Government Printing Office.

MLA

Jacobson Herbert S, Murillo Carlos, Ruiz Lorgio, Tapia Oscar, Zapata Hugo, Alarcon Hugo, Delgadillo Edgar, Velasco Carlos and United States Geological Survey. Geology and mineral deposits of the San Cristóbal district, Villa Martin Province, Potosi, Bolivia. Washington: United States Government Printing Office. 1969.