Philippines (Republic). National Economic Council. (1967). Economic survey of the province of Bulacan. [s.n.].
Цитирование в стиле Чикаго (17-е изд.)Philippines (Republic). National Economic Council. Economic Survey of the Province of Bulacan. Manila: [s.n.], 1967.
Цитирование MLA (9-е изд.)Philippines (Republic). National Economic Council. Economic Survey of the Province of Bulacan. [s.n.], 1967.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.