Kusdiyati, Sulisworo. “STUDI KORELASI WPT ( WONDERLIC PERSONNEL TEST ) DAN IST ( INTELLIGENZ STRUCTUR TEST )”. Psympathic : Jurnal Ilmiah Psikologi, vol. 3, no. 1, Feb. 2018, pp. 59-76, doi:10.15575/psy.v3i1.2177.