APA (7th ed.) Citation

Groffen, W. H. (1963). Horizontaal organiseren. Samsom.

Chicago Style (17th ed.) Citation

Groffen, Wilhelmus Hendrikus. Horizontaal Organiseren. Alphen aan den Rijn: Samsom, 1963.

MLA (9th ed.) Citation

Groffen, Wilhelmus Hendrikus. Horizontaal Organiseren. Samsom, 1963.

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