To cite items from Reproduction Abstracts, please make sure you include the names of the authors, year of publication, abstract title and, most importantly, the fact that it is from Reproduction Abstracts, with volume and abstract number. You may also wish to include the name of the conference.
For example:
Arnold A 2017 Primary hyperparathyroidism: molecular genetic insights and clinical implications. Presented at Society for Endocrinology BES 2017, Harrogate, UK. Endocrine Abstracts 50 PL1