APA-referens (7:e uppl.)
Langa, P. V. (2014). Higher Education in Portuguese Speaking African Countries: Higher Education in Portuguese Speaking African Countries. Project Muse.
Chicago-referens (17:e uppl.)
Langa, Patrício Vitorino. Higher Education in Portuguese Speaking African Countries: Higher Education in Portuguese Speaking African Countries. Baltimore, Maryland: Project Muse, 2014.
MLA-referens (9:e uppl.)
Langa, Patrício Vitorino. Higher Education in Portuguese Speaking African Countries: Higher Education in Portuguese Speaking African Countries. Project Muse, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.