Gaya APA

Hygienists, A, C, O, G, I. (1982). Industrial Ventilation : A Manual of Recommended Practice 17th Ed. (17th.ed.). Lansing Michigan, USA: Edwards Brothers. Inc.

Gaya MLA

Hygienists, American, Conference, Of, Governmental, Industrial. "Industrial Ventilation : A Manual of Recommended Practice 17th Ed.". 17th.ed. Lansing Michigan, USA: Edwards Brothers. Inc, 1982. Text.