Gaya APA
Brown, Lester R.. (1995).
Tanda-tanda Zaman : Lester R. Brown .
Jakarta:
Yayasan Obor Indonesia.
Gaya Chicago
Brown, Lester R..
Tanda-tanda Zaman : Lester R. Brown.
Jakarta:
Yayasan Obor Indonesia,
1995.
Buku.
Gaya MLA
Brown, Lester R..
Tanda-tanda Zaman : Lester R. Brown.
Jakarta:
Yayasan Obor Indonesia,
1995.
Buku.
Gaya Turabian
Brown, Lester R..
Tanda-tanda Zaman : Lester R. Brown.
Jakarta:
Yayasan Obor Indonesia,
1995.
Buku.