Wellman, S. (1995). David Livingstone from Africa to eternity. Barbour Publishing.
Chicago Style aipamenaWellman, Sam. David Livingstone from Africa to Eternity. Uhrichsville, OH: Barbour Publishing, 1995.
MLA aipamenaWellman, Sam. David Livingstone from Africa to Eternity. Barbour Publishing, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.