APA (7th ed.) Citation

Wolf, E. (2005). Doctrina Christiana The first book printed in the Philippines, Manila, 1593. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wolf, Edwin. Doctrina Christiana The First Book Printed in the Philippines, Manila, 1593. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Wolf, Edwin. Doctrina Christiana The First Book Printed in the Philippines, Manila, 1593. Project Gutenberg, 2005.

Warning: These citations may not always be 100% accurate.