Ruttner, Franz. "Frontmatter". Fundamentals of Limnology, edited by D.G. Frey and F.E.J. Fry, Toronto: University of Toronto Press, 1953, pp. I-iv. https://doi.org/10.3138/9781487573782-fm
Ruttner, F. (1953). Frontmatter. In D. Frey & F. Fry (Ed.), Fundamentals of Limnology (pp. I-iv). Toronto: University of Toronto Press. https://doi.org/10.3138/9781487573782-fm
Ruttner, F. 1953. Frontmatter. In: Frey, D. and Fry, F. ed. Fundamentals of Limnology. Toronto: University of Toronto Press, pp. I-iv. https://doi.org/10.3138/9781487573782-fm
Ruttner, Franz. "Frontmatter" In Fundamentals of Limnology edited by D.G. Frey and F.E.J. Fry, I-iv. Toronto: University of Toronto Press, 1953. https://doi.org/10.3138/9781487573782-fm
Ruttner F. Frontmatter. In: Frey D, Fry F (ed.) Fundamentals of Limnology. Toronto: University of Toronto Press; 1953. p.I-iv. https://doi.org/10.3138/9781487573782-fm