Gaya APA

Swanson, C, P., Willgoose, C, E. (NULL). Health teaching in secondary schools . Philladelphia:: Philladelphia: Saunders College6c1982;.

Gaya MLA

Swanson, Carl, P.., Willgoose, Carl, E.. "Health teaching in secondary schools". Philladelphia:: Philladelphia: Saunders College6c1982;, NULL. Text.