https://www.amazon.com/Inflationary-Universe-Theory-Cosmic-Origins/dp/0201149427/ref=sr_1_1?crid=540YBNQAREO0&dib=eyJ2IjoiMSJ9.FkMGtwivmkBk_jEJAyR_35FKuxhiq7qWQn01sfOcBxZexTcgSxkR3Ui2ffNIJlByTKzrOL_3MM7j7Au7CT_JAfUa7L42peBqH6r7Jblr2YGNuIFw72ibvbTW06mktTkKbCqqpjkf6ECVoed-FbxhMnk_NOE-TsBK7a23sK9WfGACNXdywGWcMnsqG0vmgytsTE4uBXckoFLveYsIqVEAUIdC08hNdGDkjonoiXBBpf0.aiSy0Gb3x0XF1hIFwlyU4nFSHuiE2qPvL3dJcBjIj9k&dib_tag=se&keywords=alan+guth&qid=1711213140&sprefix=alan+guth%2Caps%2C136&sr=8-1