Gaya APA

Plomp, T., Jef., I, D, K, V, I, M. (). CAL for Europe : computer-assisted learning for Europe . Elsevier Science Publisher: Elsevier Science Publisher.

Gaya MLA

Plomp, Tj.., Jef., I., Deursen,, Koos, Van, II., Moonen,. "CAL for Europe : computer-assisted learning for Europe". Elsevier Science Publisher: Elsevier Science Publisher, . .