(1987). The New Encyclopaedia Britannica Volume 6 Alphabetic [H-I-J-K]. The University of Chicago.
Chicago Style aipamenaThe New Encyclopaedia Britannica Volume 6 Alphabetic [H-I-J-K]. The University of Chicago, 1987.
MLA aipamenaThe New Encyclopaedia Britannica Volume 6 Alphabetic [H-I-J-K]. The University of Chicago, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.