APA (7e ed.) Bronvermelding

Certeza Surveying Co., Inc. (1965). Proposals on property tax maps preparations of Tarlac province. s.n.

Chicago (17e ed.) Bronvermelding

Certeza Surveying Co., Inc. Proposals on Property Tax Maps Preparations of Tarlac Province. [Quezon City: s.n, 1965.

MLA (9e ed.) Bronvermelding

Certeza Surveying Co., Inc. Proposals on Property Tax Maps Preparations of Tarlac Province. s.n, 1965.