APA (7e ed.) Bronvermelding

De Castro, H. C., Santos, A. M., & Arlante, S. M. (1993). A survey of libraries among selected agencies under the Office of the President with implications toward resource sharing.

Chicago (17e ed.) Bronvermelding

De Castro, Helen C., Antonio M. Santos, en Salvacion M. Arlante. A Survey of Libraries Among Selected Agencies Under the Office of the President with Implications Toward Resource Sharing. Quezon City : Institute of Library Science, University of the Philippines Diliman, 1993.

MLA (9e ed.) Bronvermelding

De Castro, Helen C., et al. A Survey of Libraries Among Selected Agencies Under the Office of the President with Implications Toward Resource Sharing. 1993.