Gaya APA

Van, E, E, G. et al (1986). Distance higher education and the adult learner . Netherlands: Dutch Open University Heerlen van Gorcum.

Gaya MLA

Van, Editet, Enckeor,, Ger. et al. "Distance higher education and the adult learner". Netherlands: Dutch Open University Heerlen van Gorcum, 1986. Text.