Gaya APA
Ps, D. (1991).
Soal - jawab statistik bagian statistik deskriptif / Djarwanto Ps (Ed. 2, Cet. 1).
Yogyakarta:
Liberty.
Gaya MLA
Ps, Djarwanto.
"Soal - jawab statistik bagian statistik deskriptif / Djarwanto Ps".
Ed. 2, Cet. 1
Yogyakarta:
Liberty,
1991.
Buku.