APA (7th ed.) Citation

(1991). SP Info: Ledenblad SP De Haan. De Haan: SP.

Chicago Style (17th ed.) Citation

SP Info: Ledenblad SP De Haan. De Haan: SP, 1991.

MLA (8th ed.) Citation

SP Info: Ledenblad SP De Haan. De Haan: SP, 1991.

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