Crawshaw, B., Seddon, G., & McGregor, A. (1981). Assessment of strategies for the training of teachers of environmental education: Research proposal submitted to UNESCO/UNEP Environmental Education Program for the project: Content & methods of teacher training in environmental education in Australia. Centre for Environmental Studies, University of Melbourene.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Crawshaw, Bruce, George Seddon, و Ann McGregor. Assessment of Strategies for the Training of Teachers of Environmental Education: Research Proposal Submitted to UNESCO/UNEP Environmental Education Program for the Project: Content & Methods of Teacher Training in Environmental Education in Australia. Parkville, Vic.: Centre for Environmental Studies, University of Melbourene, 1981.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Crawshaw, Bruce, et al. Assessment of Strategies for the Training of Teachers of Environmental Education: Research Proposal Submitted to UNESCO/UNEP Environmental Education Program for the Project: Content & Methods of Teacher Training in Environmental Education in Australia. Centre for Environmental Studies, University of Melbourene, 1981.