Gaya APA
Petersons, T. (2005).
Private secondary schools : more than 1500 schools in use and canada and abroad 2007 (Sastra Inggris).
Magelang:
.
Gaya MLA
Petersons, Thomson.
"Private secondary schools : more than 1500 schools in use and canada and abroad 2007".
Sastra Inggris
Magelang:
,
2005.
.