Παραπομπή σε μορφή APA (7η εκδ.)

Philippines (Republic) Dept. of Tourism & Philippines (Republic). Department of Tourism. Tourism: Four-year development plan, 1974 to 1977. [s.n.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Philippines (Republic) Dept. of Tourism και Philippines (Republic). Department of Tourism. Tourism: Four-year Development Plan, 1974 to 1977. Manila: [s.n.

Παραπομπή σε μορφή MLA (9th εκδ.)

Philippines (Republic) Dept. of Tourism και Philippines (Republic). Department of Tourism. Tourism: Four-year Development Plan, 1974 to 1977. [s.n.