Gaya APA
Sumardi,, Widyastuti, S.M. (2007).
Dasar-dasar perlindungan hutan (Cet. 2).
Yogyakarta:
Gajah Mada University Press.
Gaya Chicago
Sumardi,, Widyastuti, S.M.
Dasar-dasar perlindungan hutan.
Cet. 2
Yogyakarta:
Gajah Mada University Press,
2007.
Text.
Gaya MLA
Sumardi,, Widyastuti, S.M.
Dasar-dasar perlindungan hutan.
Cet. 2
Yogyakarta:
Gajah Mada University Press,
2007.
Text.
Gaya Turabian
Sumardi,, Widyastuti, S.M.
Dasar-dasar perlindungan hutan.
Cet. 2
Yogyakarta:
Gajah Mada University Press,
2007.
Print.