APA (7th ed.) Citation

Haas, J. d. (1969). 'Dubbele enz. ABC congres'.

Chicago Style (17th ed.) Citation

Haas, Joh. de. 'Dubbele Enz. ABC Congres'. 1969.

MLA (8th ed.) Citation

Haas, Joh. de. 'Dubbele Enz. ABC Congres'. 1969.

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