Bibliography - Chemistry bibliographies - in Harvard style

In-text: (Howell, 2017)

Your Bibliography: Howell, E., 2017. Humans Really Are Made of Stardust, and a New Study Proves It. [online] Space.com. Available at: <https://www.space.com/35276-humans-made-of-stardust-galaxy-life-elements.html> [Accessed 30 May 2018].

In-text: (We Are Made of Stardust, and Science Has Proven It!, 2018)

Your Bibliography: Learning Mind. 2018. We Are Made of Stardust, and Science Has Proven It!. [online] Available at: <https://www.learning-mind.com/we-are-stardust-scientific-proof//> [Accessed 30 May 2018].

In-text: (Melina, 2010)

Your Bibliography: Melina, R., 2010. Are We Really All Made of Stars?. [online] Live Science. Available at: <https://www.livescience.com/32828-humans-really-made-stars.html> [Accessed 30 May 2018].

In-text: (Life on Earth - stars produce heavy elements, 2018)

Your Bibliography: Pages.astronomy.ua.edu. 2018. Life on Earth - stars produce heavy elements. [online] Available at: <http://pages.astronomy.ua.edu/keel/ay101/background/stars.html> [Accessed 30 May 2018].

In-text: (Are we really all made of stardust?, 2018)

Your Bibliography: Physics.org. 2018. Are we really all made of stardust?. [online] Available at: <http://www.physics.org/article-questions.asp?id=52> [Accessed 30 May 2018].

In-text: (How elements are formed, 2009)

Your Bibliography: Science Learning Hub. 2009. How elements are formed. [online] Available at: <https://www.sciencelearn.org.nz/resources/1727-how-elements-are-formed> [Accessed 30 May 2018].

In-text: (Worrall, 2015)

Your Bibliography: Worrall, S., 2015. We Are Stardust—Literally. [online] National Geographic. Available at: <https://news.nationalgeographic.com/2015/01/150128-big-bang-universe-supernova-astrophysics-health-space-ngbooktalk/> [Accessed 30 May 2018].