Citazione Stile APA (7a Edizione)

Frobenius, L. (1913). The voice of Africa: Being an account of the travels of the german inner african exploration expedition in the years 1910, 1912 (2a. ed.). Hutchinson & Co.

Citazione stile Chigago Style (17a edizione)

Frobenius, Leo. The Voice of Africa: Being an Account of the Travels of the German Inner African Exploration Expedition in the Years 1910, 1912. 2a. ed. Londres: Hutchinson & Co, 1913.

Citatione MLA (9a ed.)

Frobenius, Leo. The Voice of Africa: Being an Account of the Travels of the German Inner African Exploration Expedition in the Years 1910, 1912. 2a. ed. Hutchinson & Co, 1913.