3G Elearning. (2016). Front office services: Intermediate. 3G Elearning.
Chicago (17e ed.) Bronvermelding3G Elearning. Front Office Services: Intermediate. UAE: 3G Elearning, 2016.
MLA (9e ed.) Bronvermelding3G Elearning. Front Office Services: Intermediate. 3G Elearning, 2016.
Let op: Deze citaties zijn niet altijd 100% accuraat.