Gaya APA
H.Smith, A. (1982).
Encyclopedia Americana; Orley to Photoengraving = 21 (Volume 21).
U.S.A:
Grolier Incorporated.
Gaya MLA
H.Smith, Alan.
"Encyclopedia Americana; Orley to Photoengraving = 21".
Volume 21
U.S.A:
Grolier Incorporated,
1982.
1.