Παραπομπή APA

Theobald, D. W. (1966). Concept of energy. E. & F. N. Spon Ltd.

Παραπομπή Chicago Style

Theobald, D W. Concept of Energy. London: E. & F. N. Spon Ltd, 1966.

Παραπομπή MLA

Theobald, D W. Concept of Energy. E. & F. N. Spon Ltd, 1966.