You did what?
I showed you a text book that stated the life of a human being begins at conception. It's a textbook used for "medical students, undergraduate students, and nursing students" according to Elsevier's web listing.
First, you didn't ask which universities use it. Second, the web listing from Elsevier
did state it is used by students.
I can't show you which universities use
Integrated Principles of Zoology as a introductory text for biology students. It's sitting on my shelf, I know it's a text book, but there's no website online where it says my university uses this text book.
Move goal posts much?
Saying that some students use it as a textbook does not really tell us much. The reason I asked for a textbook or a paper in a reputable, refereed journal such as Nature or Lancet is that there is peer review, any material written is judged by the peers before it is published (in journals).
If a university used a book as a textbook, that tells me that a team of experts at the university has looked over the book carefully and agrees with pretty much everything the book says. There are some standards involved there.
Anybody can write a book, that means nothing. And if some students use that as a textbook, again, that doesn’t mean much. A student may like parts of the book and not other parts; he may simply ignore the parts he doesn’t agree with.
That does not happen with a textbook adopted by the university or a paper published in a reputable journal.
That is why I asked for a textbook, not a book which is used by some students as a textbook. There is a big difference.
And if it is being used as a textbook by a university then one must look at calibre of the university. It is Harvard or Oral Roberts University?