Παραπομπή APA

Milne, L., & Milne, M. (1971). Nature of life: Earth, Plants, animals, man and their effect on each other.

Παραπομπή Chicago Style

Milne, Lorus, και Margery Milne. Nature of Life: Earth, Plants, Animals, Man and Their Effect on Each Other. 1971.

Παραπομπή MLA

Milne, Lorus, και Margery Milne. Nature of Life: Earth, Plants, Animals, Man and Their Effect on Each Other. 1971.