Hayward, J. H. (1969). Pears handy reference book. Pelham Books.
Chicago Style aipamenaHayward, Judith H. Pears Handy Reference Book. Pelham Books, 1969.
MLA aipamenaHayward, Judith H. Pears Handy Reference Book. Pelham Books, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.