Cita APA (7a ed.)
Watchman, A. Some observations on the radiocarbon and cosmogenic isotope dating of petroglyphs, Foz Côa, Portugal.
Cita Chicago Style (17a ed.)
Watchman, Alan. Some Observations on the Radiocarbon and Cosmogenic Isotope Dating of Petroglyphs, Foz Côa, Portugal.
Cita MLA (9a ed.)
Watchman, Alan. Some Observations on the Radiocarbon and Cosmogenic Isotope Dating of Petroglyphs, Foz Côa, Portugal.
Precaución: Estas citas no son 100% exactas.