(1964). Science 3 with health and safety: Our gifts from God's World. Laidlaw Brothers.
Chicago-referens (17:e uppl.)Science 3 with Health and Safety: Our Gifts from God's World. River Forest, IL: Laidlaw Brothers, 1964.
MLA-referens (9:e uppl.)Science 3 with Health and Safety: Our Gifts from God's World. Laidlaw Brothers, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.