APA

Guigues II E. C., Walsh J., Colledge E., Walsh J. & Colledge E. (1980). Lettre sur la vie contemplative. Paris: Cerf.

Chicago

Guigues II El Cartujo, Walsh James, Colledge Edmond, Walsh James and Colledge Edmond. 1980. Lettre sur la vie contemplative. Paris: Cerf.

Harvard

Guigues II E. C., Walsh J., Colledge E., Walsh J. and Colledge E. (1980). Lettre sur la vie contemplative. Paris: Cerf.

MLA

Guigues II El Cartujo, Walsh James, Colledge Edmond, Walsh James and Colledge Edmond. Lettre sur la vie contemplative. Paris: Cerf. 1980.