Memoires de Siam - Les personnages - Phaulkon, Monsieur Constance (in French) Panayotis D. Cangelaris: "Costantin Gerachi (Constance Phaulkon) - A new genealogical approach" (reprint in Greek) Panayotis D. Cangelaris: "The French coat of arms of prime counsellor Costantin Gerachi (Constance Phaulkon)" (reprint in Greek)
Memoires de Siam - Les personnages - Phaulkon, Monsieur Constance (dalam bahasa Prancis) Panayotis D. Cangelaris: "Costantin Gerachi (Constance Phaulkon) - A new genealogical approach" (dicetak ulang dalam bahasa Yunani) Panayotis D. Cangelaris: "The French coat of arms of prime counsellor Costantin Gerachi (Constance Phaulkon)" (dicetak ulang dalam bahasa Yunani)