摘要：This study aims to: (1) describe the users' profile of the reference collections in PDII-LIPI Library basedon age,gender,education,knowledge, users’experience; types and subjects of the reference collectionwhich had been used by users; how to get the collection; and users’purpose using the referencecollections;(2) evaluate the utilization aspects of the reference collection that are reviewed based on easeof obtaining the reference collection;completeness of the reference collection; updated the referencecollection; physical condition and arrangement of the reference collection; and the attitudes of officers inproviding reference services to users.Data used in this study were quantitative，sourced from thequestionnaire that were distributed to 100 respondents. Data were processed and analyzed using SPSS 23software. The validity of the data was tested using Pearson Product Moment correlation and the reliabilitywas tested using Alpha Cronbanch technique. Data that had been processed and tested then presenteddescriptively on graphs. From the distribution of questionnaires, only 5l respondents who filled out andreturned the questionnaire to researchers，and these numbers were considered as valid and reliable.Results of the evaluation indicates that most of the reference collection users in PDII-LIPI Library are: (1)20-25 years old, female, and from undergraduate background, use the reference collections by coming tothe library or ordering via-email (through information searching services); (2) use journal collections forpreparing their final project or research，such as undergraduate theses，graduate theses or doctoraldissertation; and (3) feel that the reference collections are very easy, complete, up to date,in a goodphysical condition and arrangement, and the attitude of the reference officers on serving to the users aregood.
