Gaya APA

Woodruff, E., B. et al. (2005). Steam plant operation (Ed.8). new york: Akademi Komunitas Perkebunan Yogyakarta.

Gaya MLA

Woodruff, E., B. et al.. Steam plant operation. Ed.8 new york: Akademi Komunitas Perkebunan Yogyakarta, 2005. Text.