APA
Downie N., . (1984). Basic statistical methods 5th ed. [Place of publication not identified]: Harper & Row.
Chicago
Downie N.M, . 1984. Basic statistical methods 5th ed. [Place of publication not identified]: Harper & Row.
Harvard
Downie N., . (1984). Basic statistical methods 5th ed. [Place of publication not identified]: Harper & Row.
MLA
Downie N.M, . Basic statistical methods 5th ed. [Place of publication not identified]: Harper & Row. 1984.