Social Weather Stations & National Economic and Development Authority. Training and Development Issues Project. (1990). The September 1989 public opinion survey: An interim report to the Training and Development Issues Project, National Economic and Development Authority. Social Weather Stations.
Citace podle Chicago (17th ed.)Social Weather Stations a National Economic and Development Authority. Training and Development Issues Project. The September 1989 Public Opinion Survey: An Interim Report to the Training and Development Issues Project, National Economic and Development Authority. Quezon City: Social Weather Stations, 1990.
Citace podle MLA (9th ed.)Social Weather Stations a National Economic and Development Authority. Training and Development Issues Project. The September 1989 Public Opinion Survey: An Interim Report to the Training and Development Issues Project, National Economic and Development Authority. Social Weather Stations, 1990.