Valore

Pearson+

pearson.com

Perlego

perlego.com

Chegg

chegg.com

RedShelf

redshelf.com

VitalSource

vitalsource.com

Textbooks.com

textbooks.com

Varsity Tutors

varsitytutors.com

OpenStax

openstax.org

zyBooks

zybooks.com

Value Research

valueresearchonline.com

ProQuest

proquest.com

Libretexts

libretexts.org

Bookboon

bookboon.com

Bartleby

bartleby.com

Runestone Academy

runestone.academy

BrokeScholar

brokescholar.com

Clusterbooks

clusterbooks.com

Rentometer

rentometer.com

Valutico

valutico.com

Bokus

bokus.com

MyEducator

myeducator.com

Valuer

valuer.ai

Quero Bolsa

querobolsa.com.br

BiblioTech

bexarbibliotech.org