Style de citation APA (7e éd.)

Gumilëv, L. N., & Smith, R. E. F. (1987). Searches for an imaginary kingdom: The legend of the kingdom of Prester John. Cambridge Univ. Press.

Style de citation Chicago (17e éd.)

Gumilëv, Lev Nikolaevič, et Robert Ernest Frederick Smith. Searches for an Imaginary Kingdom: The Legend of the Kingdom of Prester John. Cambridge [u.a.]: Cambridge Univ. Press, 1987.

Style de citation MLA (8e éd.)

Gumilëv, Lev Nikolaevič, et Robert Ernest Frederick Smith. Searches for an Imaginary Kingdom: The Legend of the Kingdom of Prester John. Cambridge Univ. Press, 1987.