Books on Amazon:
Utilitarianism/P. Singer: When it comes to achieving happiness for the largest number of individuals, consideration is given to what suffering or misfortune could be caused by enforcement. Utilitarianism is therefore not unrealistic. E.g. lies can be assessed in some circumstances as bad, in others however as good, depending on its consequences.
Utilitarianism/Bentham/P. Singer: Bentham thesis: "Everyone counts as one and nobody as more than one".
Utilitarianism/P. Singer: my version is not that of the classic utilitarians like Bentham, Mill and Sidgwick. Their utilitarianism is called "hedonist utilitarianism", which is about the multiplication of happiness. > Preference utilitarianism.
Practical Ethics (Third Edition) Cambridge 2011
The Most Good You Can Do: How Effective Altruism is Changing Ideas About Living Ethically. New Haven 2015