Gaya APA

Ratnawati A, Enny. (2004). Layanan tepat berkat reliability . : InfoBank.

Gaya Chicago

Ratnawati A, Enny. Layanan tepat berkat reliability. : InfoBank, 2004. Text.

Gaya MLA

Ratnawati A, Enny. Layanan tepat berkat reliability. : InfoBank, 2004. Text.

Gaya Turabian

Ratnawati A, Enny. Layanan tepat berkat reliability. : InfoBank, 2004. Print.