Gaya APA

Soeprapto, D. (1989). IPS PELENGKAPjavascript:%20openWin('/perpus/admin/modules/bibliography/pop_item.php?inPopUp=true&action=detail&biblioID=8800',%20'popItem',%20600,%20400,%20true) KEADAAN ALAM (2). Hoboken, NJ: Balai Pustaka.

Gaya MLA

Soeprapto, Drs.. "IPS PELENGKAPjavascript:%20openWin('/perpus/admin/modules/bibliography/pop_item.php?inPopUp=true&action=detail&biblioID=8800',%20'popItem',%20600,%20400,%20true) KEADAAN ALAM". 2 Hoboken, NJ: Balai Pustaka, 1989. Printed Book.