Cita APA (7a ed.)

Teilhard de Chardin, P. (1967). Letters from a Traveller (1923-1955). Collins.

Cita Chicago Style (17a ed.)

Teilhard de Chardin, Pierre. Letters from a Traveller (1923-1955). London: Collins, 1967.

Cita MLA (9a ed.)

Teilhard de Chardin, Pierre. Letters from a Traveller (1923-1955). Collins, 1967.