Philippines. Office of the Press Secretary. Bureau of Communication Services. (1990). Ang diwang Filipino: Noon, ngayon at bukas. The Bureau.
Chicago-referens (17:e uppl.)Philippines. Office of the Press Secretary. Bureau of Communication Services. Ang Diwang Filipino: Noon, Ngayon at Bukas. [s.l.]: The Bureau, 1990.
MLA-referens (9:e uppl.)Philippines. Office of the Press Secretary. Bureau of Communication Services. Ang Diwang Filipino: Noon, Ngayon at Bukas. The Bureau, 1990.
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