Cita APA (7th ed.)

Teilhard de Chardin, P. (1962). Letters from a traveller. Collins.

Cita Chicago (17th ed.)

Teilhard de Chardin, Pierre. Letters from a Traveller. London: Collins, 1962.

Cita MLA (9th ed.)

Teilhard de Chardin, Pierre. Letters from a Traveller. Collins, 1962.