APA (7e ed.) Bronvermelding

(1990). Building Maintenance & Modernisation Worldwide Volume Two Proceeings Of The International Symposium On Property Modernisation 7-9 March 1990. School Building and Estate Man.

Chicago (17e ed.) Bronvermelding

Building Maintenance & Modernisation Worldwide Volume Two Proceeings Of The International Symposium On Property Modernisation 7-9 March 1990. School Building and Estate Man, 1990.

MLA (8e ed.) Bronvermelding

Building Maintenance & Modernisation Worldwide Volume Two Proceeings Of The International Symposium On Property Modernisation 7-9 March 1990. School Building and Estate Man, 1990.