Gaya APA
Santoso, S. (1999).
SPSS (Statistical Product and Service Solutions) .
Jakarta:
Elex Media Komputindo Kelompok Gramedia.
Gaya MLA
Santoso, Singgih.
"SPSS (Statistical Product and Service Solutions)".
Jakarta:
Elex Media Komputindo Kelompok Gramedia,
1999.
Textbook.