Quennell, A. M. (1958). East-Central Regional Committee for Geology, Sub-Committee on Stratigraphical nomenclature. s.n..
Chicago Style aipamenaQuennell, A. M. East-Central Regional Committee for Geology, Sub-Committee on Stratigraphical Nomenclature. [Tanganyika?: s.n., 1958.
MLA aipamenaQuennell, A. M. East-Central Regional Committee for Geology, Sub-Committee on Stratigraphical Nomenclature. s.n., 1958.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.