Gaya APA

Walker, Richard. (2006). HOW WE BREATHE . Australia: GROLIER.

Gaya Chicago

Walker, Richard. HOW WE BREATHE. Australia: GROLIER, 2006. Text.

Gaya MLA

Walker, Richard. HOW WE BREATHE. Australia: GROLIER, 2006. Text.

Gaya Turabian

Walker, Richard. HOW WE BREATHE. Australia: GROLIER, 2006. Print.