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Gaya APA
Sosrodarsono, I, S.(1989).Alat-Alat Berat dan Penggunaannya .Indonesia:Pekerjaan Umum.
Gaya MLA
Sosrodarsono, Ir., Suyono."Alat-Alat Berat dan Penggunaannya".Indonesia:Pekerjaan Umum,1989.Text.