Gaya APA

Rata rata upah pekerja perkebunan 1986-1988 = average wage of estate workers 1986-1988. (1989). Jakarta: [s.n.].

Gaya MLA

Rata rata upah pekerja perkebunan 1986-1988 = average wage of estate workers 1986-1988. . Jakarta: [s.n.], 1989. Buku.