Gaya APA
Simbolon, H.
(2013).
Statistika
(
Ed.1, Cet.2)
.
Yogyakarta:
Yayasan Dharma Graha.
Gaya MLA
Simbolon, Hotman.
"Statistika".
Ed.1, Cet.2
Yogyakarta:
Yayasan Dharma Graha,
2013.
Textbook.