Pengaruh frekuensi latihan senam kesegaran jasmani terhadap kesegaran jasmani pegawai negeri sipil di Yogyakarta = The Effect of the Frequency of Physical Fitness Exercise on the Physical Fitness of Civil Servants in.. - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 1995)