Gaya APA
Keadaan alam;Text;;;OReilly;1981;;;910 Soe;Indonesia;Sebastopol. ().
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Gaya Chicago
Keadaan alam;Text;;;OReilly;1981;;;910 Soe;Indonesia;Sebastopol.
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CA;910/975;;;;;;<975 smp 81>.
Gaya MLA
Keadaan alam;Text;;;OReilly;1981;;;910 Soe;Indonesia;Sebastopol.
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CA;910/975;;;;;;<975 smp 81>.
Gaya Turabian
Keadaan alam;Text;;;OReilly;1981;;;910 Soe;Indonesia;Sebastopol.
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CA;910/975;;;;;;<975 smp 81>.