توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Freyre, G. (1961). The Portuguese and the tropics. Executive C'ttee for the Commemoration of the Vth Centenary of the Death of Prince Henry the Navigator.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Freyre, Gilberto. The Portuguese and the Tropics. Lisbon: Executive C'ttee for the Commemoration of the Vth Centenary of the Death of Prince Henry the Navigator, 1961.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Freyre, Gilberto. The Portuguese and the Tropics. Executive C'ttee for the Commemoration of the Vth Centenary of the Death of Prince Henry the Navigator, 1961.