Citations refer to the original publication, not to a Scieee localized version.
Espinosa, P. (n.d.). Tractatus proportionum. [Salamanca?] : [Alfonso de Porras] : Visum et de precepto Praelati impressum, 1531. https://idus.us.es/items/8b893e3e-6014-4b2a-8d79-9d42e143d027
Espinosa, Pedro, 1578-1650. Tractatus proportionum. [Salamanca?] : [Alfonso de Porras] : Visum et de precepto Praelati impressum, 1531. https://idus.us.es/items/8b893e3e-6014-4b2a-8d79-9d42e143d027.
Espinosa, Pedro, 1578-1650. Tractatus proportionum. [Salamanca?] : [Alfonso de Porras] : Visum et de precepto Praelati impressum, 1531, n.d. https://idus.us.es/items/8b893e3e-6014-4b2a-8d79-9d42e143d027.
Espinosa, P. (no date) Tractatus proportionum. [Salamanca?] : [Alfonso de Porras] : Visum et de precepto Praelati impressum, 1531. Available at: https://idus.us.es/items/8b893e3e-6014-4b2a-8d79-9d42e143d027.
P. Espinosa, “Tractatus proportionum,” [Salamanca?] : [Alfonso de Porras] : Visum et de precepto Praelati impressum, 1531. [Online]. Available: https://idus.us.es/items/8b893e3e-6014-4b2a-8d79-9d42e143d027
@misc{espinosatractatus,
author = {Espinosa, Pedro, 1578-1650},
title = {Tractatus proportionum},
publisher = {[Salamanca?] : [Alfonso de Porras] : Visum et de precepto Praelati impressum, 1531},
url = {https://idus.us.es/items/8b893e3e-6014-4b2a-8d79-9d42e143d027}
}
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