Pemahaman materi pendidikan kependudukan dengan pendekatan ELM (studi analisis proses belajar materi pendidikan kependudukan kepada siswa kelas 1-3 SD ST Markus Jakarta) = The comprehension of population education material approached by elaboration likelihood model (analysis study and learning materials education to studen grades 1-3 elementary school ST Markus Jakarta) / Yovita Elvie Setianingsih