It's like this ... :
500 years of pictures for science: [exhibition held at] Nottingham Castle, June 15th to September 15th, 1971.
APA Citation
Nottingham Castle Museum. (1974). It's like this ...: 500 years of pictures for science: [exhibition held at] Nottingham Castle, June 15th to September 15th, 1971. [Nottingham]: City of Nottingham Leisure Services.
MLA Citation
Nottingham Castle Museum. It's Like This ...: 500 Years of Pictures for Science: [exhibition Held At] Nottingham Castle, June 15th to September 15th, 1971. [Nottingham]: City of Nottingham Leisure Services, 1974.
Warning: These citations may not always be complete (especially for serials).