APA (7th ed.) Citation

Hubbard, R. L. (1975). The factor book. Hilton Management Services Ltd.

Chicago Style (17th ed.) Citation

Hubbard, Richard Leonard. The Factor Book. Lytham-St-Annes: Hilton Management Services Ltd, 1975.

MLA (8th ed.) Citation

Hubbard, Richard Leonard. The Factor Book. Hilton Management Services Ltd, 1975.