Grollig, F. X. Francis X. Grollig, S.J., papers.
Chicago Style aipamenaGrollig, Francis Xavier. Francis X. Grollig, S.J., Papers.
MLA aipamenaGrollig, Francis Xavier. Francis X. Grollig, S.J., Papers.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.