Gaya APA

Perkembangan upah pekerja perkebunan 1979-1981 = wages trend of estate workers 1979-1981. (1984). Jakarta: [s.n.].

Gaya MLA

Perkembangan upah pekerja perkebunan 1979-1981 = wages trend of estate workers 1979-1981. . Jakarta: [s.n.], 1984. Buku.