Gaya APA

Sobel, ., Sobel, D. (2016). E-book The Glass Universe: The Hidden History of the Women Who Took the Measure of the Stars . Great Britain: 4th Estate.

Gaya MLA

Sobel, ., Sobel, Dava. "E-book The Glass Universe: The Hidden History of the Women Who Took the Measure of the Stars". Great Britain: 4th Estate, 2016. Text.