Christiansen, M. L. (1977). Park planning handbook: Fundamentals of physical planning for parks and recreation areas. Wiley.
Chicago (17e ed.) BronvermeldingChristiansen, Monty L. Park Planning Handbook: Fundamentals of Physical Planning for Parks and Recreation Areas. New York: Wiley, 1977.
MLA (9e ed.) BronvermeldingChristiansen, Monty L. Park Planning Handbook: Fundamentals of Physical Planning for Parks and Recreation Areas. Wiley, 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.