Velasco, G. Z. (1979). Development, energy, and national survival: Selected speeches of Minister Geronimo Z. Velasco. Ministry of Energy.
Chicago-viite (17. p.)Velasco, Geronimo Z. Development, Energy, and National Survival: Selected Speeches of Minister Geronimo Z. Velasco. Makati: Ministry of Energy, 1979.
MLA-viite (9. p.)Velasco, Geronimo Z. Development, Energy, and National Survival: Selected Speeches of Minister Geronimo Z. Velasco. Ministry of Energy, 1979.
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