May, J. (1963). There's advanture is geology. Bailey.
Chicago Style (17th ed.) ZitazioaMay, Julian. There's Advanture Is Geology. London: Bailey, 1963.
MLA (9th ed.) ZitazioaMay, Julian. There's Advanture Is Geology. Bailey, 1963.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.