Lydia Maulida
Badan Perencanaan Pembangunan Nasional (BAPPENAS), 2023
Artikel Jurnal
Rourke, Francis E.
Little, Brown, 1979
Buku Teks
Doblstein, Andrew W.
Prentice-Hall, 1980
Buku Teks
by James E. Anderson; David Brady; Charles Bullock III; Joseph stewart, JR
Brooks/Cole; cengage learning, 1984
Buku Teks
Yeric, Jerry L.
F.E. Peacock, 1983
Buku Teks SO