APA Style

Winarno, Wing Wahyu. (1990). Wordperfect 5.1 (2). Yogyakarta: STIE YKPN.

Chicago Style

Winarno, Wing Wahyu. Wordperfect 5.1. 2 Yogyakarta: STIE YKPN, 1990. Text.

MLA Style

Winarno, Wing Wahyu. Wordperfect 5.1. 2 Yogyakarta: STIE YKPN, 1990. Text.

Turabian Style

Winarno, Wing Wahyu. Wordperfect 5.1. 2 Yogyakarta: STIE YKPN, 1990. Print.