The term 'referred to' can be expressed in two different ways. The first is 'cited, ' which is a five-letter word meaning to quote or refer to as an authority. This is often used in academic writing, where sources are cited to back up claims. The second is 'ALLUDED, ' which is a seven-letter word meaning to suggest or hint at something without explicitly mentioning it. This is often used in literature, where authors may allude to other works or ideas without directly referencing them.