- Guilleragues, Gabriel Joseph de Lavergne,
Guilleragues, Gabriel Joseph de Lavergne, vizconde de, 1628-1685 (Nombre personal)
- De Guilleragues, Gabriel Joseph de Lavergne, vicomte, 1628-1685
- Guilleragues, Gabriel Joseph de Lavergne, vicomte de, 1628-1685
- De Lavergne, Gabriel Joseph, vicomte de Guilleragues, 1628-1685
- Guilleragues, 1628-1685
- Гийераг, 1628-1685
- Giĭerag, 1628-1685
- Гийераг, Габриэль-Жозеф, 1628-1685
- Giĭerag, Gabriėlʹ-Zhozef, 1628-1685
- Lavergne, Gabriel Joseph de, vicomte de Guilleragues, 1628-1685
Lettere portoghesi, 1995: title page (Guilleragues) page 4 of cover (il visconte de Guilleragues)
Portugal'skie pis'ma, 1973: title page (Giĭerag) added French title page (Guilleragues)
LC database, September 26, 2018 (access point: Guilleragues, Gabriel Joseph de Lavergne, vicomte de, 1628-1685; usage: Guilleragues)
BNF, via WWW, September 26, 2018 (Guilleragues, Gabriel Joseph de Lavergne (1628-1685 ; comte de) forme internationale; birth 1628-11-18, Bordeaux; death 1685-03-15, Constantinople)
Encyclopaedia Britannica, via WWW, September 26, 2018 (Gabriel-Joseph de Lavergne, viscount of Guilleragues; Gabriel-Joseph de Lavergne, vicomte de Guilleragues; born November 18, 1628, Bordeaux, France, died March 4, 1685, Constantinople, Ottoman Empire; French author and diplomat, considered by most modern authorities to be the author of the Lettres portugaises (1669); lawyer in the Bordeaux high court; moved to Paris, where he became private secretary to King Louis XIV in 1669 and 10 years later was appointed French ambassador at Constantinople)
National Library of Russia, WWW, October 19, 2018 NLR Personal Names Authority File (Гийераг, Габриэль-Жозеф (1628-1685) = Giĭerag, Gabriėlʹ-Zhozef (1628-1685))