Gaya APA

Guilford, J. (1981). Fundamental statistic in psychologyand education / J.P. Guilford; Benyamin Frucher (Ed. 6). : McGraw-Hill Book Company.

Gaya MLA

Guilford, J.P.. "Fundamental statistic in psychologyand education / J.P. Guilford; Benyamin Frucher". Ed. 6 : McGraw-Hill Book Company, 1981. Referensi.