International Congress on Carboniferous Stratigraphy and Geology Sheffield. (1969). Compte rendu. E. Van Aelst.
Chicago Style (17th ed.) CitationInternational Congress on Carboniferous Stratigraphy and Geology Sheffield. Compte Rendu. Maastricht: E. Van Aelst, 1969.
MLA引文International Congress on Carboniferous Stratigraphy and Geology Sheffield. Compte Rendu. E. Van Aelst, 1969.
警告:这些引文格式不一定是100%准确.