APA (7e ed.) Bronvermelding
The Open University. (2007). Environmental control and public health: Block 3 water pollution control. The Open University.
Chicago (17e ed.) Bronvermelding
The Open University. Environmental Control and Public Health: Block 3 Water Pollution Control. United Kingdom: The Open University, 2007.
MLA (9e ed.) Bronvermelding
The Open University. Environmental Control and Public Health: Block 3 Water Pollution Control. The Open University, 2007.
Let op: Deze citaties zijn niet altijd 100% accuraat.