The available primary sources show that certain authoritative documents and guidelines acknowledge that short texts may omit formal summaries, often due to brevity. Publishing standards from credible scientific journals and agencies emphasize concise content and in some cases, dispense with abstracts or summaries for shorter pieces. High-authority guidelines for authors explicitly mention that summaries are typical for longer or complex texts, but not required for brief documents. There is no evidence suggesting mandatory summaries for all originals regardless of their length, nor any clear contradiction implying that short texts always include summaries. Combined with the context of high relevance sources that demonstrate norms supporting omission of summaries in short works, the statement aligns well with standard publishing practices, making it likely true.