Gaya APA

Loether, H, J., McTavish, D, G. (1993). Descriptive and inferintial statistic: an introduction (4). United States of America: Allyn & Bacon.

Gaya MLA

Loether, Herman, J., McTavish, Donald, G. "Descriptive and inferintial statistic: an introduction". 4 United States of America: Allyn & Bacon, 1993. Text.