Παραπομπή σε μορφή APA (7η εκδ.)

Philippines Bureau of Soils and Water Management & Sulu Province Land Resources Evaluation Project. (1990). Agro-climatic zone map. Bureau of Soil and Water Management.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Philippines Bureau of Soils and Water Management και Sulu Province Land Resources Evaluation Project. Agro-climatic Zone Map. [Quezon City]: Bureau of Soil and Water Management, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Philippines Bureau of Soils and Water Management και Sulu Province Land Resources Evaluation Project. Agro-climatic Zone Map. Bureau of Soil and Water Management, 1990.