APA-referens (7:e uppl.)

Schaafsma, W. (1966). Hypothesis testing problems with alternative restricted by a number of inequalities. P. Noordhoff.

Chicago-referens (17:e uppl.)

Schaafsma, Willem. Hypothesis Testing Problems with Alternative Restricted by a Number of Inequalities. Groningen: P. Noordhoff, 1966.

MLA-referens (9:e uppl.)

Schaafsma, Willem. Hypothesis Testing Problems with Alternative Restricted by a Number of Inequalities. P. Noordhoff, 1966.