Robert H Marshall. (1987). Manual of laboratory and language activities to accompany physical science: Investigating matter and energy. Baltimore, Maryland: Media Materials.
استشهاد بنمط شيكاغوRobert H Marshall. Manual of Laboratory and Language Activities to Accompany Physical Science: Investigating Matter and Energy. Baltimore, Maryland: Media Materials, 1987.
MLA استشهادRobert H Marshall. Manual of Laboratory and Language Activities to Accompany Physical Science: Investigating Matter and Energy. Baltimore, Maryland: Media Materials, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.