J. J W. Coppen. (1995). Non-wood forest products; N.2: Gum naval stores: turpentine and rosin from pine resin. Rome: FAO.
استشهاد بنمط شيكاغوJ. J W. Coppen. Non-wood Forest Products; N.2: Gum Naval Stores: Turpentine and Rosin From Pine Resin. Rome: FAO, 1995.
MLA استشهادJ. J W. Coppen. Non-wood Forest Products; N.2: Gum Naval Stores: Turpentine and Rosin From Pine Resin. Rome: FAO, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.