Geography Teachers' Association of Victoria & Blachford, K. (1971). Orbis: A collection of readings for Higher School Certificate geography students. Geography Teachers' Association of Victoria.
芝加哥风格引文Geography Teachers' Association of Victoria 与 Kevin Blachford. Orbis: A Collection of Readings for Higher School Certificate Geography Students. [Carlton, Vic.]: Geography Teachers' Association of Victoria, 1971.
MLA引文Geography Teachers' Association of Victoria 与 Kevin Blachford. Orbis: A Collection of Readings for Higher School Certificate Geography Students. Geography Teachers' Association of Victoria, 1971.
警告：这些引文格式不一定是100％准确.