APA (7th ed.) Citation

(1969). Tragiek ener wetenschap. s.n.].

Chicago Style (17th ed.) Citation

Tragiek Ener Wetenschap. s.n.], 1969.

MLA (8th ed.) Citation

Tragiek Ener Wetenschap. s.n.], 1969.

Warning: These citations may not always be 100% accurate.