Gaya APA
Smith, Laurence C.. (2011).
The World in 2050: Four Forces Shaping Civilization's Northern Future .
New York:
Plume Book.
Gaya Chicago
Smith, Laurence C..
The World in 2050: Four Forces Shaping Civilization's Northern Future.
New York:
Plume Book,
2011.
Buku.
Gaya MLA
Smith, Laurence C..
The World in 2050: Four Forces Shaping Civilization's Northern Future.
New York:
Plume Book,
2011.
Buku.
Gaya Turabian
Smith, Laurence C..
The World in 2050: Four Forces Shaping Civilization's Northern Future.
New York:
Plume Book,
2011.
Buku.