El libro al que te refieres es Estudio de las Sectas (o Understanding the Cults
Key Themes in his analysis:
series, it provides a Christian apologetic framework for identifying and responding to groups defined as "cults" or "sects" based on their departure from orthodox Christian doctrine. First Baptist Church of Buda Key Content and Themes estudio zen de las sectas josh mcdowell pdf
While you will not find "estudio zen de las sectas" by McDowell, you can find legitimate PDFs of his works on cults and world religions. Here are the key titles: El libro al que te refieres es Estudio