Porter, J. D. (1981). Levels of importance and proficiency of selected solar technology competency elements at the technician level.
Chicago-Zitierstil (17. Ausg.)Porter, Joe D. Levels of Importance and Proficiency of Selected Solar Technology Competency Elements at the Technician Level. 1981.
MLA-Zitierstil (9. Ausg.)Porter, Joe D. Levels of Importance and Proficiency of Selected Solar Technology Competency Elements at the Technician Level. 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.