APA: 
Grotlüschen, Anke (2017). Literacy Level 1 and below versus literacy Level 4 and above - international results regarding participation in adult education. 
Sodobna pedagogika, letnik 68 = 134, številka 4, str. 130-147. 
URN:NBN:SI:doc-ENF9H6TZ from http://www.dlib.si
 
                           MLA: 
Grotlüschen, Anke. "Literacy Level 1 and below versus literacy Level 4 and above - international results regarding participation in adult education." 
Sodobna pedagogika letnik 68 = 134. številka 4 (2017) str. 130-147.
<http://www.dlib.si/?URN=URN:NBN:SI:doc-ENF9H6TZ>