| 英文.... | The individual sheets folded into two leaves that together form a gathering. |
| 荷蘭語.... | De afzonderlijke vellen die in twee bladen gevouwen zijn en gezamenlijk een katern vormen. |
| 折帖............ | [AS-Academia Sinica] |
| ................. | AAT-Taiwan 借詞編輯與使用原則 (2013) |
| 對折的書頁............ | [AS-Academia Sinica] |
| ................. | 香港新浪字典 May 19, 2015 |
| ................. | Online Dictionary April 22, 2015 |
| bifolia............ | [VP] |
| ................. | Brown, Guide to Western Historical Scripts (1990) GLOS, Double sheets which are folded to form the quire. |
| ................. | Dictionary of the Middle Ages (1982-1989) Vol. 8, 101, plural |
| ................. | Powell, Medieval Studies (1976) 50 |
| bifolium............ | [VP] |
| ................. | Dictionary of the Middle Ages (1982-1989) Vol. 8, 101 |
| bifolios............ | [VP] |
| ................. | Calkins, Illuminated Books (1983) 16, in text |
| folios(bifolia)............ | [VP] |
| ................. | Webster's Third New International Dictionary (1961) def. 2a; folios |
| ................. | Random House Unabridged Dictionary (1993) def. 1; folios |
| ................. | Getty Vocabulary Program rules |
| ................. | Candidate term Candidate term -- HRHRC -- 9/94; propsoed as descriptor instead of "bifolia" which has same meaning and more warrant in specialized sources; made use for term here; folios |
| dubbelbladen............ | [Bureau AAT] |
| ................. | AAT-Ned (1994-) |
| dubbelblad............ | [Bureau AAT] |
| ................. | AAT-Ned (1994-) |
| bifolio............ | [CDBP-DIBAM] |
| ................. | TAA database (2000-) |
| Subject:............ | [Bureau AAT] |
| ................. | Koninklijke Bibliotheek Den Haag |