APA (7th ed.) Citation

Derksen, J. B. D. (1946). A system of national book-keeping. The University press.

Chicago Style (17th ed.) Citation

Derksen, J. B. D. A System of National Book-keeping. Cambridge: The University press, 1946.

MLA (9th ed.) Citation

Derksen, J. B. D. A System of National Book-keeping. The University press, 1946.