APA (7th ed.) Citation

Hartman, S. (1948). L'orientation professionnelle en Pologne. International Labour Organization.

Chicago Style (17th ed.) Citation

Hartman, Seweryn. L'orientation Professionnelle En Pologne. International Labour Organization, 1948.

MLA (9th ed.) Citation

Hartman, Seweryn. L'orientation Professionnelle En Pologne. International Labour Organization, 1948.

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