Gaya APA
Lewis, R. (1997).
Macmillan encyclopedia of science jilid 11: communication .
USA:
Macmillan Library Reference.
Gaya MLA
Lewis, Rhys.
"Macmillan encyclopedia of science jilid 11: communication".
USA:
Macmillan Library Reference,
1997.
Buku Penunjang.