APA

Wildiers N., . (1968). An introduction to Teilhard de Chardin. New York: Harper & Row.

Chicago

Wildiers Norbertus, . 1968. An introduction to Teilhard de Chardin. New York: Harper & Row.

Harvard

Wildiers N., . (1968). An introduction to Teilhard de Chardin. New York: Harper & Row.

MLA

Wildiers Norbertus, . An introduction to Teilhard de Chardin. New York: Harper & Row. 1968.