Cita APA (7th ed.)

Regala, R. (1969). World order and diplomacy. Central Lawbook Pub. Co.

Cita Chicago (17th ed.)

Regala, Roberto. World Order and Diplomacy. Quezon City: Central Lawbook Pub. Co, 1969.

Cita MLA (9th ed.)

Regala, Roberto. World Order and Diplomacy. Central Lawbook Pub. Co, 1969.