Dyfyniad APA

Spemann, H. (1967). Embryonic development and induction. Hafner Press.

Dyfyniad Arddull Chicago

Spemann, H. Embryonic Development and Induction. Newyork: Hafner Press, 1967.

Dyfyniad MLA

Spemann, H. Embryonic Development and Induction. Hafner Press, 1967.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.