APA

Firth A., Lacey M., .100 Things to Know About the Human Body. London: .

Chicago

Firth Alexl, Lacey Minna, .100 Things to Know About the Human Body. London: .

Harvard

Firth A., Lacey M., .100 Things to Know About the Human Body. London: .

MLA

Firth Alexl, Lacey Minna, .London: . .