Referendum Act Article 14

If the Executive Yuan deems it necessary to hold a referendum on any matter stipulated in Subparagraph 3 of Paragraph 2 of Article 2, it may submit the main text and the statement of reasons to the competent authority for the referendum after obtaining the consent of the Legislative Yuan. The provisions of Article 13, Paragraph 1 of Article 17, and Article 19 shall not apply.After the Executive Yuan submits a referendum proposal to the Legislative Yuan, the Legislative Yuan shall make a decision within fifteen days. If the proposal is submitted during a recess, the Legislative Yuan shall convene a meeting within fifteen days and make a decision within thirty days.If the Legislative Yuan rejects the Executive Yuan's proposal, the Executive Yuan may not resubmit a proposal on the same matter within two years from the date of rejection.
中文原文 公民投票法第14條
行政院對於第二條第二項第三款之事項,認為有進行公民投票之必要者,得附具主文、理由書,經立法院同意,交由主管機關辦理公民投票,不適用第九條至第十三條、第十七條第一項第三款及第十九條規定。
行政院向立法院提出公民投票之提案後,立法院應在十五日內議決,於休會期間提出者,立法院應於十五日內自行集會,三十日內議決。
行政院之提案經立法院否決者,自該否決之日起二年內,不得就該事項重行提出。

English translation for reference only; the Chinese text prevails. Not legal advice.