The usual advice is to use the one-person-one-language rule. You speak exclusively your mother tongue to your child, your wife does the same. You have to act like you don't understand English or your child will catch on and switch to what ever their strongest language is, probably English, if you are in an English community.
Rely on the community to teach English, camps, daycare, babysitters, etc. If the community doesn't teach English (i.e. you aren't in an English speaking community), then decide on a protocol that you are comfortable with for when to use which-- for example, using English outside the house and your respective mother tongues at home, or what ever you can do consistently.
We don't know what it takes to get kids to be fluent in multiple languages, we do know what consistently fails: speaking English with your wife, to your children, and in the community, while throwing in an occasional flavor word from the minority language (i.e. the non-community one). Your question was brief, but you have the seed of the outline of language extinction in your plan. I grew up in the US, in the last 3 generations of my family upward of 12 languages died (weren't passed on to the next generation). Fighting language extinction takes, sometimes, the determination of an eccentric.
7 Steps to Raising a Bilingual Child
Raising a Bilingual Child