APA (7th ed.) Citation

Haas, J. d. (1961). 'Troelstra-oord, Beekbergen reserve'.

Chicago Style (17th ed.) Citation

Haas, Joh. de. 'Troelstra-oord, Beekbergen Reserve'. 1961.

MLA (8th ed.) Citation

Haas, Joh. de. 'Troelstra-oord, Beekbergen Reserve'. 1961.

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