Charles Porter G.. A Theological Education by Extension workbook. A course which presents the important points of each book and emphasizes the unity which exists between the books.

• Editorial Bautista Independiente
• Spiral
• Vol. 1, Matthew – Acts, 251 pages, ISBN# 1-879892-15-4

Digital PDF documents

• Vol. 1, Matthew – Acts, ISBN# 978-1-932607-87-1
• Vol. 2, Romans – Revelation, ISBN# 978-1-932607-88-8