Gaya APA

Levinson, R, W, . (1984). Accessing human services / Riska W. Levinson . : Sagr Public.

Gaya MLA

Levinson, Riska, W., . "Accessing human services / Riska W. Levinson". : Sagr Public, 1984. Pendidikan Guru Madrasah Ibtidaiyah.