Gaya APA
Questions and Answers;Pengendalian Pencemaran : Limbah Cair,pencemaran udara,kebisingan. (2009).
Mesir:
[s.n.].
Gaya Chicago
Questions and Answers;Pengendalian Pencemaran : Limbah Cair,pencemaran udara,kebisingan.
.
Mesir:
[s.n.],
2009.
Text.
Gaya MLA
Questions and Answers;Pengendalian Pencemaran : Limbah Cair,pencemaran udara,kebisingan.
.
Mesir:
[s.n.],
2009.
Text.
Gaya Turabian
Questions and Answers;Pengendalian Pencemaran : Limbah Cair,pencemaran udara,kebisingan.
Mesir:
[s.n.],
2009.
Print.