Nasution, Andi Hakim
Panduan berpikir dan meneliti secara ilmiah bagi remaja
Grasindo, 1992
Buku Teks SO
Metode-metode penelitian masyarakat
Gramedia, 1993
Buku Teks SO
Experimental design in industry
edited by Victor Chew
John Wiley & Sons, 1958
Buku Teks SO
Bambang Prasetyo
Metode penelitian kuantitatif: teori dan aplikasi
RajaGrafindo Persada, 2007
Buku Teks SO
Kendall, Maurice, Sir
Rank correlation methods
Charles Griffin, 1975
Buku Teks SO