The purpose of a reference list is to give readers a document that they can use to retrieve information from the same sources the authors used. To that end, the reference list must contain accurate information about material that is readily available. In short, if the information is not readily available from a recognized print or electronic source, it should not be included in the reference list. Standard Print Sources. In ASA–CSSA–SSSA publications, only literature available through libraries or other readily accessible public media may be cited. All other material, such as personal communications (information from someone other than the authors) or unpublished data (information from one or more author named in the byline), is cited in the text as parenthetical matter. Placing “unpublished data ” or “personal communication ” between the name and year clearly distinguishes these citations from those keyed to the reference list
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