Oakland Publis Schools. (1954). Tentative guide: Tenth-grade science biology. [s.n.].
Citazione stile Chigago Style (17a edizione)Oakland Publis Schools. Tentative Guide: Tenth-grade Science Biology. Oakland: [s.n.], 1954.
Citatione MLA (9a ed.)Oakland Publis Schools. Tentative Guide: Tenth-grade Science Biology. [s.n.], 1954.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.