APA (7th ed.) Citation

Sijpesteijn, P. J. (1989). A money-account of customs duties? [editor no identificat].

Chicago Style (17th ed.) Citation

Sijpesteijn, P. J. A Money-account of Customs Duties? Bonn: [editor no identificat], 1989.

MLA (9th ed.) Citation

Sijpesteijn, P. J. A Money-account of Customs Duties? [editor no identificat], 1989.

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