Gaya APA

Luis, S., Tarigan, R, M. (). Step By Step in Developing Vision, Mission and Value Statements . Jakarta: Gramedia Pustaka Utama.

Gaya MLA

Luis, Suwardi., Tarigan, Rina, M.. "Step By Step in Developing Vision, Mission and Value Statements". Jakarta: Gramedia Pustaka Utama, . Text.