Guide to the Pflaum Publishing Company publications, 1889-1971, CSC.034. Roesch Library.
Chicago Style aipamenaGuide to the Pflaum Publishing Company Publications, 1889-1971, CSC.034. Roesch Library.
MLA aipamenaGuide to the Pflaum Publishing Company Publications, 1889-1971, CSC.034. Roesch Library.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.