The Galapagos Affair

A Naturalist’s Guide to the Galápagos Islands – 2nd Edition

Adventure Guide to Ecuador and the Galapagos Islands

Field Guide to the Birds of Ecuador

Birds of Western Ecuador: A Photographic Guide

Dive and Travel Galapagos

The Ecuador Reader: History, Culture, Politics

My Family and the Galapagos

Colombia's Diversity Problem: A Speech on Tourism