APA

Nelkon M., . (1965). Light and sound. : Heinemann Educational, London.

Chicago

Nelkon M, . 1965. Light and sound. : Heinemann Educational, London.

Harvard

Nelkon M., . (1965). Light and sound. : Heinemann Educational, London.

MLA

Nelkon M, . Light and sound. : Heinemann Educational, London. 1965.