APA Style
Scofield, John. (1977).
National geographic index 1947-1976 .
Washington:
National geographic society.
Chicago Style
Scofield, John.
National geographic index 1947-1976.
Washington:
National geographic society,
1977.
Buku Teks.
MLA Style
Scofield, John.
National geographic index 1947-1976.
Washington:
National geographic society,
1977.
Buku Teks.
Turabian Style
Scofield, John.
National geographic index 1947-1976.
Washington:
National geographic society,
1977.
Buku Teks.