International Science School for High School Students (16th : University of Sydney), Bok, B. J., Messel, H., & Butler, S. T. (1977). Focus on the stars: [by] B.J. Bok [and others]. Heinemann Educational.
Chicago Style (17th ed.) CitationInternational Science School for High School Students (16th : University of Sydney), Bart J. Bok, H. Messel, and S. T. Butler. Focus on the Stars: [by] B.J. Bok [and Others]. London: Heinemann Educational, 1977.
MLA (8th ed.) CitationInternational Science School for High School Students (16th : University of Sydney), et al. Focus on the Stars: [by] B.J. Bok [and Others]. Heinemann Educational, 1977.
Warning: These citations may not always be 100% accurate.