Tietueen sitaatit
APA-viiteGray, P. k. (2015). Free to learn: Why unleashing the instinct to play will make our children happier, more self-reliant, and better students for life (First paperback edition.). Basic Books, a member of the Perseus Books Group.
Chicago-tyylinen lähdeviittausGray, Peter kirjoittaja. Free to Learn: Why Unleashing the Instinct to Play Will Make Our Children Happier, More Self-reliant, and Better Students for Life. First paperback edition. New York: Basic Books, a member of the Perseus Books Group, 2015.
MLA-viiteGray, Peter kirjoittaja. Free to Learn: Why Unleashing the Instinct to Play Will Make Our Children Happier, More Self-reliant, and Better Students for Life. First paperback edition. Basic Books, a member of the Perseus Books Group, 2015.
Harvard-tyylinen lähdeviittausGray, P. k. 2015. Free to learn: Why unleashing the instinct to play will make our children happier, more self-reliant, and better students for life. First paperback edition. New York: Basic Books, a member of the Perseus Books Group.
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