Langa, P. V. (2014). Higher Education in Portuguese Speaking African Countries: Higher Education in Portuguese Speaking African Countries. Project Muse.
芝加哥风格引文Langa, Patrício Vitorino. Higher Education in Portuguese Speaking African Countries: Higher Education in Portuguese Speaking African Countries. Baltimore, Maryland: Project Muse, 2014.
MLA引文Langa, Patrício Vitorino. Higher Education in Portuguese Speaking African Countries: Higher Education in Portuguese Speaking African Countries. Project Muse, 2014.
警告：这些引文格式不一定是100％准确.