Observasi perkembangan anak usia dini

Observing children in their Natural worlds : a methodological primer

Teori-teori sosial: observasi kritis terhada para filosof termuka = Social theory: a guide to central thinkers

Systematic self-observation

Prakiraan Hujan Menggunakan Artificial Neural Network Berbasis Data Pengamatan (Observasi) = Rain Forecast Using Artificial Neural Network Based on Observation Data.