Cita APA (7th ed.)

Barril, C., Madamba, L., & Tumlos, E. (1994). Water quality of Laguna de Bay: Status and trends.

Cita Chicago (17th ed.)

Barril, C.R, L.S.P Madamba, i E.T Tumlos. Water Quality of Laguna De Bay: Status and Trends. 1994.

Cita MLA (9th ed.)

Barril, C.R, et al. Water Quality of Laguna De Bay: Status and Trends. 1994.